diff --git a/t/lib-submodule-update.sh b/t/lib-submodule-update.sh
index be78cdc1ff..5b56b23166 100755
--- a/t/lib-submodule-update.sh
+++ b/t/lib-submodule-update.sh
@@ -756,7 +756,7 @@ test_submodule_recursing_with_args_common() {
 			: >sub1/untrackedfile &&
 			test_must_fail $command replace_sub1_with_file &&
 			test_superproject_content origin/add_sub1 &&
-			test_submodule_content sub1 origin/add_sub1
+			test_submodule_content sub1 origin/add_sub1 &&
 			test -f sub1/untracked_file
 		)
 	'
@@ -844,7 +844,7 @@ test_submodule_switch_recursing_with_args () {
 			cd submodule_update &&
 			git branch -t add_sub1 origin/add_sub1 &&
 			: >sub1 &&
-			echo sub1 >.git/info/exclude
+			echo sub1 >.git/info/exclude &&
 			$command add_sub1 &&
 			test_superproject_content origin/add_sub1 &&
 			test_submodule_content sub1 origin/add_sub1
@@ -971,7 +971,6 @@ test_submodule_forced_switch_recursing_with_args () {
 			rm -rf .git/modules/sub1 &&
 			$command replace_sub1_with_directory &&
 			test_superproject_content origin/replace_sub1_with_directory &&
-			test_submodule_content sub1 origin/modify_sub1
 			test_git_directory_exists sub1
 		)
 	'
diff --git a/t/t0000-basic.sh b/t/t0000-basic.sh
index af61d083b4..34859fe4a5 100755
--- a/t/t0000-basic.sh
+++ b/t/t0000-basic.sh
@@ -1081,7 +1081,7 @@ test_expect_success 'very long name in the index handled sanely' '
 	(
 		git ls-files -s path4 |
 		sed -e "s/	.*/	/" |
-		tr -d "\012"
+		tr -d "\012" &&
 		echo "$a"
 	) | git update-index --index-info &&
 	len=$(git ls-files "a*" | wc -c) &&
diff --git a/t/t0001-init.sh b/t/t0001-init.sh
index 4c865051e7..ca85aae51e 100755
--- a/t/t0001-init.sh
+++ b/t/t0001-init.sh
@@ -408,7 +408,7 @@ is_hidden () {
 test_expect_success MINGW '.git hidden' '
 	rm -rf newdir &&
 	(
-		unset GIT_DIR GIT_WORK_TREE
+		sane_unset GIT_DIR GIT_WORK_TREE &&
 		mkdir newdir &&
 		cd newdir &&
 		git init &&
@@ -420,7 +420,7 @@ test_expect_success MINGW '.git hidden' '
 test_expect_success MINGW 'bare git dir not hidden' '
 	rm -rf newdir &&
 	(
-		unset GIT_DIR GIT_WORK_TREE GIT_CONFIG
+		sane_unset GIT_DIR GIT_WORK_TREE GIT_CONFIG &&
 		mkdir newdir &&
 		cd newdir &&
 		git --bare init
diff --git a/t/t0003-attributes.sh b/t/t0003-attributes.sh
index f19ae4f8cc..5c37c2e1f8 100755
--- a/t/t0003-attributes.sh
+++ b/t/t0003-attributes.sh
@@ -34,15 +34,15 @@ test_expect_success 'open-quoted pathname' '
 test_expect_success 'setup' '
 	mkdir -p a/b/d a/c b &&
 	(
-		echo "[attr]notest !test"
-		echo "\" d \"	test=d"
-		echo " e	test=e"
-		echo " e\"	test=e"
-		echo "f	test=f"
-		echo "a/i test=a/i"
-		echo "onoff test -test"
-		echo "offon -test test"
-		echo "no notest"
+		echo "[attr]notest !test" &&
+		echo "\" d \"	test=d" &&
+		echo " e	test=e" &&
+		echo " e\"	test=e" &&
+		echo "f	test=f" &&
+		echo "a/i test=a/i" &&
+		echo "onoff test -test" &&
+		echo "offon -test test" &&
+		echo "no notest" &&
 		echo "A/e/F test=A/e/F"
 	) >.gitattributes &&
 	(
@@ -51,7 +51,7 @@ test_expect_success 'setup' '
 	) >a/.gitattributes &&
 	(
 		echo "h test=a/b/h" &&
-		echo "d/* test=a/b/d/*"
+		echo "d/* test=a/b/d/*" &&
 		echo "d/yes notest"
 	) >a/b/.gitattributes &&
 	(
@@ -287,7 +287,7 @@ test_expect_success 'bare repository: check that .gitattribute is ignored' '
 	(
 		cd bare.git &&
 		(
-			echo "f	test=f"
+			echo "f	test=f" &&
 			echo "a/i test=a/i"
 		) >.gitattributes &&
 		attr_check f unspecified &&
@@ -312,7 +312,7 @@ test_expect_success 'bare repository: test info/attributes' '
 	(
 		cd bare.git &&
 		(
-			echo "f	test=f"
+			echo "f	test=f" &&
 			echo "a/i test=a/i"
 		) >info/attributes &&
 		attr_check f f &&
diff --git a/t/t0021-conversion.sh b/t/t0021-conversion.sh
index 9479a4aaab..6a213608cc 100755
--- a/t/t0021-conversion.sh
+++ b/t/t0021-conversion.sh
@@ -785,7 +785,7 @@ test_expect_success PERL 'missing file in delayed checkout' '
 		cd repo &&
 		git init &&
 		echo "*.a filter=bug" >.gitattributes &&
-		cp "$TEST_ROOT/test.o" missing-delay.a
+		cp "$TEST_ROOT/test.o" missing-delay.a &&
 		git add . &&
 		git commit -m "test commit"
 	) &&
@@ -807,7 +807,7 @@ test_expect_success PERL 'invalid file in delayed checkout' '
 		git init &&
 		echo "*.a filter=bug" >.gitattributes &&
 		cp "$TEST_ROOT/test.o" invalid-delay.a &&
-		cp "$TEST_ROOT/test.o" unfiltered
+		cp "$TEST_ROOT/test.o" unfiltered &&
 		git add . &&
 		git commit -m "test commit"
 	) &&
diff --git a/t/t0090-cache-tree.sh b/t/t0090-cache-tree.sh
index 0c61268fd2..28ea93f509 100755
--- a/t/t0090-cache-tree.sh
+++ b/t/t0090-cache-tree.sh
@@ -156,7 +156,7 @@ test_expect_success PERL 'commit --interactive gives cache-tree on partial commi
 		return 44;
 	}
 	EOT
-	(echo p; echo 1; echo; echo s; echo n; echo y; echo q) |
+	test_write_lines p 1 "" s n y q |
 	git commit --interactive -m foo &&
 	test_cache_tree
 '
diff --git a/t/t1004-read-tree-m-u-wf.sh b/t/t1004-read-tree-m-u-wf.sh
index 826cd32e23..c13578a635 100755
--- a/t/t1004-read-tree-m-u-wf.sh
+++ b/t/t1004-read-tree-m-u-wf.sh
@@ -210,10 +210,10 @@ test_expect_success 'D/F' '
 	read_tree_u_must_succeed -m -u branch-point side-b side-a &&
 	git ls-files -u >actual &&
 	(
-		a=$(git rev-parse branch-point:subdir/file2)
-		b=$(git rev-parse side-a:subdir/file2/another)
-		echo "100644 $a 1	subdir/file2"
-		echo "100644 $a 2	subdir/file2"
+		a=$(git rev-parse branch-point:subdir/file2) &&
+		b=$(git rev-parse side-a:subdir/file2/another) &&
+		echo "100644 $a 1	subdir/file2" &&
+		echo "100644 $a 2	subdir/file2" &&
 		echo "100644 $b 3	subdir/file2/another"
 	) >expect &&
 	test_cmp expect actual
diff --git a/t/t1005-read-tree-reset.sh b/t/t1005-read-tree-reset.sh
index 074568500a..83b09e1310 100755
--- a/t/t1005-read-tree-reset.sh
+++ b/t/t1005-read-tree-reset.sh
@@ -33,7 +33,7 @@ test_expect_success 'reset should remove remnants from a failed merge' '
 	git ls-files -s >expect &&
 	sha1=$(git rev-parse :new) &&
 	(
-		echo "100644 $sha1 1	old"
+		echo "100644 $sha1 1	old" &&
 		echo "100644 $sha1 3	old"
 	) | git update-index --index-info &&
 	>old &&
@@ -48,7 +48,7 @@ test_expect_success 'two-way reset should remove remnants too' '
 	git ls-files -s >expect &&
 	sha1=$(git rev-parse :new) &&
 	(
-		echo "100644 $sha1 1	old"
+		echo "100644 $sha1 1	old" &&
 		echo "100644 $sha1 3	old"
 	) | git update-index --index-info &&
 	>old &&
@@ -63,7 +63,7 @@ test_expect_success 'Porcelain reset should remove remnants too' '
 	git ls-files -s >expect &&
 	sha1=$(git rev-parse :new) &&
 	(
-		echo "100644 $sha1 1	old"
+		echo "100644 $sha1 1	old" &&
 		echo "100644 $sha1 3	old"
 	) | git update-index --index-info &&
 	>old &&
@@ -78,7 +78,7 @@ test_expect_success 'Porcelain checkout -f should remove remnants too' '
 	git ls-files -s >expect &&
 	sha1=$(git rev-parse :new) &&
 	(
-		echo "100644 $sha1 1	old"
+		echo "100644 $sha1 1	old" &&
 		echo "100644 $sha1 3	old"
 	) | git update-index --index-info &&
 	>old &&
@@ -93,7 +93,7 @@ test_expect_success 'Porcelain checkout -f HEAD should remove remnants too' '
 	git ls-files -s >expect &&
 	sha1=$(git rev-parse :new) &&
 	(
-		echo "100644 $sha1 1	old"
+		echo "100644 $sha1 1	old" &&
 		echo "100644 $sha1 3	old"
 	) | git update-index --index-info &&
 	>old &&
diff --git a/t/t1008-read-tree-overlay.sh b/t/t1008-read-tree-overlay.sh
index 4c50ed955e..cf96016844 100755
--- a/t/t1008-read-tree-overlay.sh
+++ b/t/t1008-read-tree-overlay.sh
@@ -23,7 +23,7 @@ test_expect_success setup '
 
 test_expect_success 'multi-read' '
 	read_tree_must_succeed initial master side &&
-	(echo a; echo b/c) >expect &&
+	test_write_lines a b/c >expect &&
 	git ls-files >actual &&
 	test_cmp expect actual
 '
diff --git a/t/t1020-subdirectory.sh b/t/t1020-subdirectory.sh
index df3183ea1a..c2df75e495 100755
--- a/t/t1020-subdirectory.sh
+++ b/t/t1020-subdirectory.sh
@@ -148,7 +148,7 @@ test_expect_success 'GIT_PREFIX for built-ins' '
 	(
 		cd dir &&
 		echo "change" >two &&
-		GIT_EXTERNAL_DIFF=./diff git diff >../actual
+		GIT_EXTERNAL_DIFF=./diff git diff >../actual &&
 		git checkout -- two
 	) &&
 	test_cmp expect actual
diff --git a/t/t1050-large.sh b/t/t1050-large.sh
index f9eb143f43..1a9b21b293 100755
--- a/t/t1050-large.sh
+++ b/t/t1050-large.sh
@@ -108,7 +108,7 @@ test_expect_success 'packsize limit' '
 		test-tool genrandom "c" $(( 128 * 1024 )) >mid3 &&
 		git add mid1 mid2 mid3 &&
 
-		count=0
+		count=0 &&
 		for pi in .git/objects/pack/pack-*.idx
 		do
 			test -f "$pi" && count=$(( $count + 1 ))
@@ -116,8 +116,8 @@ test_expect_success 'packsize limit' '
 		test $count = 2 &&
 
 		(
-			git hash-object --stdin <mid1
-			git hash-object --stdin <mid2
+			git hash-object --stdin <mid1 &&
+			git hash-object --stdin <mid2 &&
 			git hash-object --stdin <mid3
 		) |
 		sort >expect &&
diff --git a/t/t1300-config.sh b/t/t1300-config.sh
index 03c223708e..24706ba412 100755
--- a/t/t1300-config.sh
+++ b/t/t1300-config.sh
@@ -888,7 +888,7 @@ EOF
 
 test_expect_success !MINGW 'get --path copes with unset $HOME' '
 	(
-		unset HOME;
+		sane_unset HOME &&
 		test_must_fail git config --get --path path.home \
 			>result 2>msg &&
 		git config --get --path path.normal >>result &&
diff --git a/t/t1411-reflog-show.sh b/t/t1411-reflog-show.sh
index 596907758d..4d62ceef9c 100755
--- a/t/t1411-reflog-show.sh
+++ b/t/t1411-reflog-show.sh
@@ -159,9 +159,9 @@ test_expect_success 'git log -g -p shows diffs vs. parents' '
 	git log -1 -p HEAD^ >log.one &&
 	git log -1 -p HEAD >log.two &&
 	(
-		cat log.one; echo
-		cat log.two; echo
-		cat log.one; echo
+		cat log.one && echo &&
+		cat log.two && echo &&
+		cat log.one && echo &&
 		cat log.two
 	) >expect &&
 	test_cmp expect actual
diff --git a/t/t1507-rev-parse-upstream.sh b/t/t1507-rev-parse-upstream.sh
index 93c77eac45..349f6e10af 100755
--- a/t/t1507-rev-parse-upstream.sh
+++ b/t/t1507-rev-parse-upstream.sh
@@ -123,9 +123,9 @@ test_expect_success 'checkout -b new my-side@{u} forks from the same' '
 
 test_expect_success 'merge my-side@{u} records the correct name' '
 (
-	cd clone || exit
-	git checkout master || exit
-	git branch -D new ;# can fail but is ok
+	cd clone &&
+	git checkout master &&
+	test_might_fail git branch -D new &&
 	git branch -t new my-side@{u} &&
 	git merge -s ours new@{u} &&
 	git show -s --pretty=tformat:%s >actual &&
diff --git a/t/t1512-rev-parse-disambiguation.sh b/t/t1512-rev-parse-disambiguation.sh
index 96fe3754c8..e4d5b56014 100755
--- a/t/t1512-rev-parse-disambiguation.sh
+++ b/t/t1512-rev-parse-disambiguation.sh
@@ -34,8 +34,8 @@ test_expect_success 'blob and tree' '
 		for i in 0 1 2 3 4 5 6 7 8 9
 		do
 			echo $i
-		done
-		echo
+		done &&
+		echo &&
 		echo b1rwzyc3
 	) >a0blgqsjc &&
 
@@ -222,7 +222,7 @@ test_expect_success 'more history' '
 
 	test_might_fail git rm -f a0blgqsjc &&
 	(
-		git cat-file blob $side:f5518nwu
+		git cat-file blob $side:f5518nwu &&
 		echo j3l0i9s6
 	) >ab2gs879 &&
 	git add ab2gs879 &&
diff --git a/t/t1700-split-index.sh b/t/t1700-split-index.sh
index 1e81b33b2e..39133bcbc8 100755
--- a/t/t1700-split-index.sh
+++ b/t/t1700-split-index.sh
@@ -435,7 +435,7 @@ test_expect_success 'writing split index with null sha1 does not write cache tre
 	commit=$(git commit-tree $tree -p HEAD <msg) &&
 	git update-ref HEAD "$commit" &&
 	GIT_ALLOW_NULL_SHA1=1 git reset --hard &&
-	(test-tool dump-cache-tree >cache-tree.out || true) &&
+	test_might_fail test-tool dump-cache-tree >cache-tree.out &&
 	test_line_count = 0 cache-tree.out
 '
 
diff --git a/t/t2016-checkout-patch.sh b/t/t2016-checkout-patch.sh
index 9cd0ac4ba3..47aeb0b167 100755
--- a/t/t2016-checkout-patch.sh
+++ b/t/t2016-checkout-patch.sh
@@ -20,33 +20,33 @@ test_expect_success PERL 'setup' '
 
 test_expect_success PERL 'saying "n" does nothing' '
 	set_and_save_state dir/foo work head &&
-	(echo n; echo n) | git checkout -p &&
+	test_write_lines n n | git checkout -p &&
 	verify_saved_state bar &&
 	verify_saved_state dir/foo
 '
 
 test_expect_success PERL 'git checkout -p' '
-	(echo n; echo y) | git checkout -p &&
+	test_write_lines n y | git checkout -p &&
 	verify_saved_state bar &&
 	verify_state dir/foo head head
 '
 
 test_expect_success PERL 'git checkout -p with staged changes' '
 	set_state dir/foo work index &&
-	(echo n; echo y) | git checkout -p &&
+	test_write_lines n y | git checkout -p &&
 	verify_saved_state bar &&
 	verify_state dir/foo index index
 '
 
 test_expect_success PERL 'git checkout -p HEAD with NO staged changes: abort' '
 	set_and_save_state dir/foo work head &&
-	(echo n; echo y; echo n) | git checkout -p HEAD &&
+	test_write_lines n y n | git checkout -p HEAD &&
 	verify_saved_state bar &&
 	verify_saved_state dir/foo
 '
 
 test_expect_success PERL 'git checkout -p HEAD with NO staged changes: apply' '
-	(echo n; echo y; echo y) | git checkout -p HEAD &&
+	test_write_lines n y y | git checkout -p HEAD &&
 	verify_saved_state bar &&
 	verify_state dir/foo head head
 '
@@ -54,14 +54,14 @@ test_expect_success PERL 'git checkout -p HEAD with NO staged changes: apply' '
 test_expect_success PERL 'git checkout -p HEAD with change already staged' '
 	set_state dir/foo index index &&
 	# the third n is to get out in case it mistakenly does not apply
-	(echo n; echo y; echo n) | git checkout -p HEAD &&
+	test_write_lines n y n | git checkout -p HEAD &&
 	verify_saved_state bar &&
 	verify_state dir/foo head head
 '
 
 test_expect_success PERL 'git checkout -p HEAD^' '
 	# the third n is to get out in case it mistakenly does not apply
-	(echo n; echo y; echo n) | git checkout -p HEAD^ &&
+	test_write_lines n y n | git checkout -p HEAD^ &&
 	verify_saved_state bar &&
 	verify_state dir/foo parent parent
 '
@@ -69,7 +69,7 @@ test_expect_success PERL 'git checkout -p HEAD^' '
 test_expect_success PERL 'git checkout -p handles deletion' '
 	set_state dir/foo work index &&
 	rm dir/foo &&
-	(echo n; echo y) | git checkout -p &&
+	test_write_lines n y | git checkout -p &&
 	verify_saved_state bar &&
 	verify_state dir/foo index index
 '
@@ -81,21 +81,21 @@ test_expect_success PERL 'git checkout -p handles deletion' '
 
 test_expect_success PERL 'path limiting works: dir' '
 	set_state dir/foo work head &&
-	(echo y; echo n) | git checkout -p dir &&
+	test_write_lines y n | git checkout -p dir &&
 	verify_saved_state bar &&
 	verify_state dir/foo head head
 '
 
 test_expect_success PERL 'path limiting works: -- dir' '
 	set_state dir/foo work head &&
-	(echo y; echo n) | git checkout -p -- dir &&
+	test_write_lines y n | git checkout -p -- dir &&
 	verify_saved_state bar &&
 	verify_state dir/foo head head
 '
 
 test_expect_success PERL 'path limiting works: HEAD^ -- dir' '
 	# the third n is to get out in case it mistakenly does not apply
-	(echo y; echo n; echo n) | git checkout -p HEAD^ -- dir &&
+	test_write_lines y n n | git checkout -p HEAD^ -- dir &&
 	verify_saved_state bar &&
 	verify_state dir/foo parent parent
 '
@@ -103,7 +103,7 @@ test_expect_success PERL 'path limiting works: HEAD^ -- dir' '
 test_expect_success PERL 'path limiting works: foo inside dir' '
 	set_state dir/foo work head &&
 	# the third n is to get out in case it mistakenly does not apply
-	(echo y; echo n; echo n) | (cd dir && git checkout -p foo) &&
+	test_write_lines y n n | (cd dir && git checkout -p foo) &&
 	verify_saved_state bar &&
 	verify_state dir/foo head head
 '
diff --git a/t/t2103-update-index-ignore-missing.sh b/t/t2103-update-index-ignore-missing.sh
index 332694e7d3..0114f05228 100755
--- a/t/t2103-update-index-ignore-missing.sh
+++ b/t/t2103-update-index-ignore-missing.sh
@@ -32,7 +32,7 @@ test_expect_success basics '
 		test_create_repo xyzzy &&
 		cd xyzzy &&
 		>file &&
-		git add file
+		git add file &&
 		git commit -m "sub initial"
 	) &&
 	git add xyzzy &&
diff --git a/t/t2202-add-addremove.sh b/t/t2202-add-addremove.sh
index 6a5a3166b1..17744e8c57 100755
--- a/t/t2202-add-addremove.sh
+++ b/t/t2202-add-addremove.sh
@@ -6,12 +6,12 @@ test_description='git add --all'
 
 test_expect_success setup '
 	(
-		echo .gitignore
+		echo .gitignore &&
 		echo will-remove
 	) >expect &&
 	(
-		echo actual
-		echo expect
+		echo actual &&
+		echo expect &&
 		echo ignored
 	) >.gitignore &&
 	git --literal-pathspecs add --all &&
@@ -25,10 +25,10 @@ test_expect_success setup '
 
 test_expect_success 'git add --all' '
 	(
-		echo .gitignore
-		echo not-ignored
-		echo "M	.gitignore"
-		echo "A	not-ignored"
+		echo .gitignore &&
+		echo not-ignored &&
+		echo "M	.gitignore" &&
+		echo "A	not-ignored" &&
 		echo "D	will-remove"
 	) >expect &&
 	>ignored &&
diff --git a/t/t3000-ls-files-others.sh b/t/t3000-ls-files-others.sh
index c525656b2c..afd4756134 100755
--- a/t/t3000-ls-files-others.sh
+++ b/t/t3000-ls-files-others.sh
@@ -84,7 +84,7 @@ test_expect_success SYMLINKS 'ls-files --others with symlinked submodule' '
 	) &&
 	(
 		cd super &&
-		"$SHELL_PATH" "$TEST_DIRECTORY/../contrib/workdir/git-new-workdir" ../sub sub
+		"$SHELL_PATH" "$TEST_DIRECTORY/../contrib/workdir/git-new-workdir" ../sub sub &&
 		git ls-files --others --exclude-standard >../actual
 	) &&
 	echo sub/ >expect &&
diff --git a/t/t3006-ls-files-long.sh b/t/t3006-ls-files-long.sh
index 202ad658b8..e109c3fbfb 100755
--- a/t/t3006-ls-files-long.sh
+++ b/t/t3006-ls-files-long.sh
@@ -29,7 +29,7 @@ test_expect_success 'overly-long path does not replace another by mistake' '
 	printf "$pat" "$blob_a" "$path_a" "$blob_z" "$path_z" |
 	git update-index --add --index-info &&
 	(
-		echo "$path_a"
+		echo "$path_a" &&
 		echo "$path_z"
 	) >expect &&
 	git ls-files >actual &&
diff --git a/t/t3008-ls-files-lazy-init-name-hash.sh b/t/t3008-ls-files-lazy-init-name-hash.sh
index 08af596ba6..64f047332b 100755
--- a/t/t3008-ls-files-lazy-init-name-hash.sh
+++ b/t/t3008-ls-files-lazy-init-name-hash.sh
@@ -14,10 +14,10 @@ LAZY_THREAD_COST=2000
 
 test_expect_success 'no buffer overflow in lazy_init_name_hash' '
 	(
-	    test_seq $LAZY_THREAD_COST | sed "s/^/a_/"
-	    echo b/b/b
-	    test_seq $LAZY_THREAD_COST | sed "s/^/c_/"
-	    test_seq 50 | sed "s/^/d_/" | tr "\n" "/"; echo d
+	    test_seq $LAZY_THREAD_COST | sed "s/^/a_/" &&
+	    echo b/b/b &&
+	    test_seq $LAZY_THREAD_COST | sed "s/^/c_/" &&
+	    test_seq 50 | sed "s/^/d_/" | tr "\n" "/" && echo d
 	) |
 	sed "s/^/100644 $EMPTY_BLOB	/" |
 	git update-index --index-info &&
diff --git a/t/t3030-merge-recursive.sh b/t/t3030-merge-recursive.sh
index 3563e77b37..ff641b348a 100755
--- a/t/t3030-merge-recursive.sh
+++ b/t/t3030-merge-recursive.sh
@@ -36,15 +36,15 @@ test_expect_success 'setup 1' '
 	test_tick &&
 	git commit -m "master modifies a and d/e" &&
 	c1=$(git rev-parse --verify HEAD) &&
-	( git ls-tree -r HEAD ; git ls-files -s ) >actual &&
+	( git ls-tree -r HEAD && git ls-files -s ) >actual &&
 	(
-		echo "100644 blob $o1	a"
-		echo "100644 blob $o0	b"
-		echo "100644 blob $o0	c"
-		echo "100644 blob $o1	d/e"
-		echo "100644 $o1 0	a"
-		echo "100644 $o0 0	b"
-		echo "100644 $o0 0	c"
+		echo "100644 blob $o1	a" &&
+		echo "100644 blob $o0	b" &&
+		echo "100644 blob $o0	c" &&
+		echo "100644 blob $o1	d/e" &&
+		echo "100644 $o1 0	a" &&
+		echo "100644 $o0 0	b" &&
+		echo "100644 $o0 0	c" &&
 		echo "100644 $o1 0	d/e"
 	) >expected &&
 	test_cmp expected actual
@@ -54,15 +54,15 @@ test_expect_success 'setup 2' '
 
 	rm -rf [abcd] &&
 	git checkout side &&
-	( git ls-tree -r HEAD ; git ls-files -s ) >actual &&
+	( git ls-tree -r HEAD && git ls-files -s ) >actual &&
 	(
-		echo "100644 blob $o0	a"
-		echo "100644 blob $o0	b"
-		echo "100644 blob $o0	c"
-		echo "100644 blob $o0	d/e"
-		echo "100644 $o0 0	a"
-		echo "100644 $o0 0	b"
-		echo "100644 $o0 0	c"
+		echo "100644 blob $o0	a" &&
+		echo "100644 blob $o0	b" &&
+		echo "100644 blob $o0	c" &&
+		echo "100644 blob $o0	d/e" &&
+		echo "100644 $o0 0	a" &&
+		echo "100644 $o0 0	b" &&
+		echo "100644 $o0 0	c" &&
 		echo "100644 $o0 0	d/e"
 	) >expected &&
 	test_cmp expected actual &&
@@ -75,15 +75,15 @@ test_expect_success 'setup 2' '
 	test_tick &&
 	git commit -m "side modifies a" &&
 	c2=$(git rev-parse --verify HEAD) &&
-	( git ls-tree -r HEAD ; git ls-files -s ) >actual &&
+	( git ls-tree -r HEAD && git ls-files -s ) >actual &&
 	(
-		echo "100644 blob $o2	a"
-		echo "100644 blob $o0	b"
-		echo "100644 blob $o0	c"
-		echo "100644 blob $o0	d/e"
-		echo "100644 $o2 0	a"
-		echo "100644 $o0 0	b"
-		echo "100644 $o0 0	c"
+		echo "100644 blob $o2	a" &&
+		echo "100644 blob $o0	b" &&
+		echo "100644 blob $o0	c" &&
+		echo "100644 blob $o0	d/e" &&
+		echo "100644 $o2 0	a" &&
+		echo "100644 $o0 0	b" &&
+		echo "100644 $o0 0	c" &&
 		echo "100644 $o0 0	d/e"
 	) >expected &&
 	test_cmp expected actual
@@ -93,15 +93,15 @@ test_expect_success 'setup 3' '
 
 	rm -rf [abcd] &&
 	git checkout df-1 &&
-	( git ls-tree -r HEAD ; git ls-files -s ) >actual &&
+	( git ls-tree -r HEAD && git ls-files -s ) >actual &&
 	(
-		echo "100644 blob $o0	a"
-		echo "100644 blob $o0	b"
-		echo "100644 blob $o0	c"
-		echo "100644 blob $o0	d/e"
-		echo "100644 $o0 0	a"
-		echo "100644 $o0 0	b"
-		echo "100644 $o0 0	c"
+		echo "100644 blob $o0	a" &&
+		echo "100644 blob $o0	b" &&
+		echo "100644 blob $o0	c" &&
+		echo "100644 blob $o0	d/e" &&
+		echo "100644 $o0 0	a" &&
+		echo "100644 $o0 0	b" &&
+		echo "100644 $o0 0	c" &&
 		echo "100644 $o0 0	d/e"
 	) >expected &&
 	test_cmp expected actual &&
@@ -112,15 +112,15 @@ test_expect_success 'setup 3' '
 	test_tick &&
 	git commit -m "df-1 makes b/c" &&
 	c3=$(git rev-parse --verify HEAD) &&
-	( git ls-tree -r HEAD ; git ls-files -s ) >actual &&
+	( git ls-tree -r HEAD && git ls-files -s ) >actual &&
 	(
-		echo "100644 blob $o0	a"
-		echo "100644 blob $o3	b/c"
-		echo "100644 blob $o0	c"
-		echo "100644 blob $o0	d/e"
-		echo "100644 $o0 0	a"
-		echo "100644 $o3 0	b/c"
-		echo "100644 $o0 0	c"
+		echo "100644 blob $o0	a" &&
+		echo "100644 blob $o3	b/c" &&
+		echo "100644 blob $o0	c" &&
+		echo "100644 blob $o0	d/e" &&
+		echo "100644 $o0 0	a" &&
+		echo "100644 $o3 0	b/c" &&
+		echo "100644 $o0 0	c" &&
 		echo "100644 $o0 0	d/e"
 	) >expected &&
 	test_cmp expected actual
@@ -130,15 +130,15 @@ test_expect_success 'setup 4' '
 
 	rm -rf [abcd] &&
 	git checkout df-2 &&
-	( git ls-tree -r HEAD ; git ls-files -s ) >actual &&
+	( git ls-tree -r HEAD && git ls-files -s ) >actual &&
 	(
-		echo "100644 blob $o0	a"
-		echo "100644 blob $o0	b"
-		echo "100644 blob $o0	c"
-		echo "100644 blob $o0	d/e"
-		echo "100644 $o0 0	a"
-		echo "100644 $o0 0	b"
-		echo "100644 $o0 0	c"
+		echo "100644 blob $o0	a" &&
+		echo "100644 blob $o0	b" &&
+		echo "100644 blob $o0	c" &&
+		echo "100644 blob $o0	d/e" &&
+		echo "100644 $o0 0	a" &&
+		echo "100644 $o0 0	b" &&
+		echo "100644 $o0 0	c" &&
 		echo "100644 $o0 0	d/e"
 	) >expected &&
 	test_cmp expected actual &&
@@ -149,15 +149,15 @@ test_expect_success 'setup 4' '
 	test_tick &&
 	git commit -m "df-2 makes a/c" &&
 	c4=$(git rev-parse --verify HEAD) &&
-	( git ls-tree -r HEAD ; git ls-files -s ) >actual &&
+	( git ls-tree -r HEAD && git ls-files -s ) >actual &&
 	(
-		echo "100644 blob $o4	a/c"
-		echo "100644 blob $o0	b"
-		echo "100644 blob $o0	c"
-		echo "100644 blob $o0	d/e"
-		echo "100644 $o4 0	a/c"
-		echo "100644 $o0 0	b"
-		echo "100644 $o0 0	c"
+		echo "100644 blob $o4	a/c" &&
+		echo "100644 blob $o0	b" &&
+		echo "100644 blob $o0	c" &&
+		echo "100644 blob $o0	d/e" &&
+		echo "100644 $o4 0	a/c" &&
+		echo "100644 $o0 0	b" &&
+		echo "100644 $o0 0	c" &&
 		echo "100644 $o0 0	d/e"
 	) >expected &&
 	test_cmp expected actual
@@ -167,15 +167,15 @@ test_expect_success 'setup 5' '
 
 	rm -rf [abcd] &&
 	git checkout remove &&
-	( git ls-tree -r HEAD ; git ls-files -s ) >actual &&
+	( git ls-tree -r HEAD && git ls-files -s ) >actual &&
 	(
-		echo "100644 blob $o0	a"
-		echo "100644 blob $o0	b"
-		echo "100644 blob $o0	c"
-		echo "100644 blob $o0	d/e"
-		echo "100644 $o0 0	a"
-		echo "100644 $o0 0	b"
-		echo "100644 $o0 0	c"
+		echo "100644 blob $o0	a" &&
+		echo "100644 blob $o0	b" &&
+		echo "100644 blob $o0	c" &&
+		echo "100644 blob $o0	d/e" &&
+		echo "100644 $o0 0	a" &&
+		echo "100644 $o0 0	b" &&
+		echo "100644 $o0 0	c" &&
 		echo "100644 $o0 0	d/e"
 	) >expected &&
 	test_cmp expected actual &&
@@ -190,13 +190,13 @@ test_expect_success 'setup 5' '
 	test_tick &&
 	git commit -m "remove removes b and modifies a" &&
 	c5=$(git rev-parse --verify HEAD) &&
-	( git ls-tree -r HEAD ; git ls-files -s ) >actual &&
+	( git ls-tree -r HEAD && git ls-files -s ) >actual &&
 	(
-		echo "100644 blob $o5	a"
-		echo "100644 blob $o0	c"
-		echo "100644 blob $o0	d/e"
-		echo "100644 $o5 0	a"
-		echo "100644 $o0 0	c"
+		echo "100644 blob $o5	a" &&
+		echo "100644 blob $o0	c" &&
+		echo "100644 blob $o0	d/e" &&
+		echo "100644 $o5 0	a" &&
+		echo "100644 $o0 0	c" &&
 		echo "100644 $o0 0	d/e"
 	) >expected &&
 	test_cmp expected actual
@@ -207,15 +207,15 @@ test_expect_success 'setup 6' '
 
 	rm -rf [abcd] &&
 	git checkout df-3 &&
-	( git ls-tree -r HEAD ; git ls-files -s ) >actual &&
+	( git ls-tree -r HEAD && git ls-files -s ) >actual &&
 	(
-		echo "100644 blob $o0	a"
-		echo "100644 blob $o0	b"
-		echo "100644 blob $o0	c"
-		echo "100644 blob $o0	d/e"
-		echo "100644 $o0 0	a"
-		echo "100644 $o0 0	b"
-		echo "100644 $o0 0	c"
+		echo "100644 blob $o0	a" &&
+		echo "100644 blob $o0	b" &&
+		echo "100644 blob $o0	c" &&
+		echo "100644 blob $o0	d/e" &&
+		echo "100644 $o0 0	a" &&
+		echo "100644 $o0 0	b" &&
+		echo "100644 $o0 0	c" &&
 		echo "100644 $o0 0	d/e"
 	) >expected &&
 	test_cmp expected actual &&
@@ -226,15 +226,15 @@ test_expect_success 'setup 6' '
 	test_tick &&
 	git commit -m "df-3 makes d" &&
 	c6=$(git rev-parse --verify HEAD) &&
-	( git ls-tree -r HEAD ; git ls-files -s ) >actual &&
+	( git ls-tree -r HEAD && git ls-files -s ) >actual &&
 	(
-		echo "100644 blob $o0	a"
-		echo "100644 blob $o0	b"
-		echo "100644 blob $o0	c"
-		echo "100644 blob $o6	d"
-		echo "100644 $o0 0	a"
-		echo "100644 $o0 0	b"
-		echo "100644 $o0 0	c"
+		echo "100644 blob $o0	a" &&
+		echo "100644 blob $o0	b" &&
+		echo "100644 blob $o0	c" &&
+		echo "100644 blob $o6	d" &&
+		echo "100644 $o0 0	a" &&
+		echo "100644 $o0 0	b" &&
+		echo "100644 $o0 0	c" &&
 		echo "100644 $o6 0	d"
 	) >expected &&
 	test_cmp expected actual
@@ -286,11 +286,11 @@ test_expect_success 'merge-recursive result' '
 
 	git ls-files -s >actual &&
 	(
-		echo "100644 $o0 1	a"
-		echo "100644 $o2 2	a"
-		echo "100644 $o1 3	a"
-		echo "100644 $o0 0	b"
-		echo "100644 $o0 0	c"
+		echo "100644 $o0 1	a" &&
+		echo "100644 $o2 2	a" &&
+		echo "100644 $o1 3	a" &&
+		echo "100644 $o0 0	b" &&
+		echo "100644 $o0 0	c" &&
 		echo "100644 $o1 0	d/e"
 	) >expected &&
 	test_cmp expected actual
@@ -325,10 +325,10 @@ test_expect_success 'merge-recursive remove conflict' '
 
 	git ls-files -s >actual &&
 	(
-		echo "100644 $o0 1	a"
-		echo "100644 $o1 2	a"
-		echo "100644 $o5 3	a"
-		echo "100644 $o0 0	c"
+		echo "100644 $o0 1	a" &&
+		echo "100644 $o1 2	a" &&
+		echo "100644 $o5 3	a" &&
+		echo "100644 $o0 0	c" &&
 		echo "100644 $o1 0	d/e"
 	) >expected &&
 	test_cmp expected actual
@@ -347,9 +347,9 @@ test_expect_success 'merge-recursive result' '
 
 	git ls-files -s >actual &&
 	(
-		echo "100644 $o1 0	a"
-		echo "100644 $o3 0	b/c"
-		echo "100644 $o0 0	c"
+		echo "100644 $o1 0	a" &&
+		echo "100644 $o3 0	b/c" &&
+		echo "100644 $o0 0	c" &&
 		echo "100644 $o1 0	d/e"
 	) >expected &&
 	test_cmp expected actual
@@ -369,11 +369,11 @@ test_expect_success 'merge-recursive d/f conflict result' '
 
 	git ls-files -s >actual &&
 	(
-		echo "100644 $o0 1	a"
-		echo "100644 $o1 2	a"
-		echo "100644 $o4 0	a/c"
-		echo "100644 $o0 0	b"
-		echo "100644 $o0 0	c"
+		echo "100644 $o0 1	a" &&
+		echo "100644 $o1 2	a" &&
+		echo "100644 $o4 0	a/c" &&
+		echo "100644 $o0 0	b" &&
+		echo "100644 $o0 0	c" &&
 		echo "100644 $o1 0	d/e"
 	) >expected &&
 	test_cmp expected actual
@@ -393,11 +393,11 @@ test_expect_success 'merge-recursive d/f conflict result the other way' '
 
 	git ls-files -s >actual &&
 	(
-		echo "100644 $o0 1	a"
-		echo "100644 $o1 3	a"
-		echo "100644 $o4 0	a/c"
-		echo "100644 $o0 0	b"
-		echo "100644 $o0 0	c"
+		echo "100644 $o0 1	a" &&
+		echo "100644 $o1 3	a" &&
+		echo "100644 $o4 0	a/c" &&
+		echo "100644 $o0 0	b" &&
+		echo "100644 $o0 0	c" &&
 		echo "100644 $o1 0	d/e"
 	) >expected &&
 	test_cmp expected actual
@@ -417,11 +417,11 @@ test_expect_success 'merge-recursive d/f conflict result' '
 
 	git ls-files -s >actual &&
 	(
-		echo "100644 $o1 0	a"
-		echo "100644 $o0 0	b"
-		echo "100644 $o0 0	c"
-		echo "100644 $o6 3	d"
-		echo "100644 $o0 1	d/e"
+		echo "100644 $o1 0	a" &&
+		echo "100644 $o0 0	b" &&
+		echo "100644 $o0 0	c" &&
+		echo "100644 $o6 3	d" &&
+		echo "100644 $o0 1	d/e" &&
 		echo "100644 $o1 2	d/e"
 	) >expected &&
 	test_cmp expected actual
@@ -441,11 +441,11 @@ test_expect_success 'merge-recursive d/f conflict result' '
 
 	git ls-files -s >actual &&
 	(
-		echo "100644 $o1 0	a"
-		echo "100644 $o0 0	b"
-		echo "100644 $o0 0	c"
-		echo "100644 $o6 2	d"
-		echo "100644 $o0 1	d/e"
+		echo "100644 $o1 0	a" &&
+		echo "100644 $o0 0	b" &&
+		echo "100644 $o0 0	c" &&
+		echo "100644 $o6 2	d" &&
+		echo "100644 $o0 1	d/e" &&
 		echo "100644 $o1 3	d/e"
 	) >expected &&
 	test_cmp expected actual
@@ -465,13 +465,13 @@ test_expect_success 'reset and bind merge' '
 	git read-tree --prefix=M/ master &&
 	git ls-files -s >actual &&
 	(
-		echo "100644 $o1 0	M/a"
-		echo "100644 $o0 0	M/b"
-		echo "100644 $o0 0	M/c"
-		echo "100644 $o1 0	M/d/e"
-		echo "100644 $o1 0	a"
-		echo "100644 $o0 0	b"
-		echo "100644 $o0 0	c"
+		echo "100644 $o1 0	M/a" &&
+		echo "100644 $o0 0	M/b" &&
+		echo "100644 $o0 0	M/c" &&
+		echo "100644 $o1 0	M/d/e" &&
+		echo "100644 $o1 0	a" &&
+		echo "100644 $o0 0	b" &&
+		echo "100644 $o0 0	c" &&
 		echo "100644 $o1 0	d/e"
 	) >expected &&
 	test_cmp expected actual &&
@@ -479,17 +479,17 @@ test_expect_success 'reset and bind merge' '
 	git read-tree --prefix=a1/ master &&
 	git ls-files -s >actual &&
 	(
-		echo "100644 $o1 0	M/a"
-		echo "100644 $o0 0	M/b"
-		echo "100644 $o0 0	M/c"
-		echo "100644 $o1 0	M/d/e"
-		echo "100644 $o1 0	a"
-		echo "100644 $o1 0	a1/a"
-		echo "100644 $o0 0	a1/b"
-		echo "100644 $o0 0	a1/c"
-		echo "100644 $o1 0	a1/d/e"
-		echo "100644 $o0 0	b"
-		echo "100644 $o0 0	c"
+		echo "100644 $o1 0	M/a" &&
+		echo "100644 $o0 0	M/b" &&
+		echo "100644 $o0 0	M/c" &&
+		echo "100644 $o1 0	M/d/e" &&
+		echo "100644 $o1 0	a" &&
+		echo "100644 $o1 0	a1/a" &&
+		echo "100644 $o0 0	a1/b" &&
+		echo "100644 $o0 0	a1/c" &&
+		echo "100644 $o1 0	a1/d/e" &&
+		echo "100644 $o0 0	b" &&
+		echo "100644 $o0 0	c" &&
 		echo "100644 $o1 0	d/e"
 	) >expected &&
 	test_cmp expected actual &&
@@ -497,21 +497,21 @@ test_expect_success 'reset and bind merge' '
 	git read-tree --prefix=z/ master &&
 	git ls-files -s >actual &&
 	(
-		echo "100644 $o1 0	M/a"
-		echo "100644 $o0 0	M/b"
-		echo "100644 $o0 0	M/c"
-		echo "100644 $o1 0	M/d/e"
-		echo "100644 $o1 0	a"
-		echo "100644 $o1 0	a1/a"
-		echo "100644 $o0 0	a1/b"
-		echo "100644 $o0 0	a1/c"
-		echo "100644 $o1 0	a1/d/e"
-		echo "100644 $o0 0	b"
-		echo "100644 $o0 0	c"
-		echo "100644 $o1 0	d/e"
-		echo "100644 $o1 0	z/a"
-		echo "100644 $o0 0	z/b"
-		echo "100644 $o0 0	z/c"
+		echo "100644 $o1 0	M/a" &&
+		echo "100644 $o0 0	M/b" &&
+		echo "100644 $o0 0	M/c" &&
+		echo "100644 $o1 0	M/d/e" &&
+		echo "100644 $o1 0	a" &&
+		echo "100644 $o1 0	a1/a" &&
+		echo "100644 $o0 0	a1/b" &&
+		echo "100644 $o0 0	a1/c" &&
+		echo "100644 $o1 0	a1/d/e" &&
+		echo "100644 $o0 0	b" &&
+		echo "100644 $o0 0	c" &&
+		echo "100644 $o1 0	d/e" &&
+		echo "100644 $o1 0	z/a" &&
+		echo "100644 $o0 0	z/b" &&
+		echo "100644 $o0 0	z/c" &&
 		echo "100644 $o1 0	z/d/e"
 	) >expected &&
 	test_cmp expected actual
@@ -589,8 +589,8 @@ test_expect_success 'merge-recursive simple w/submodule result' '
 
 	git ls-files -s >actual &&
 	(
-		echo "100644 $o5 0	a"
-		echo "100644 $o0 0	c"
+		echo "100644 $o5 0	a" &&
+		echo "100644 $o0 0	c" &&
 		echo "160000 $c1 0	d"
 	) >expected &&
 	test_cmp expected actual
@@ -601,13 +601,13 @@ test_expect_success 'merge-recursive copy vs. rename' '
 	git merge rename &&
 	( git ls-tree -r HEAD && git ls-files -s ) >actual &&
 	(
-		echo "100644 blob $o0	b"
-		echo "100644 blob $o0	c"
-		echo "100644 blob $o0	d/e"
-		echo "100644 blob $o0	e"
-		echo "100644 $o0 0	b"
-		echo "100644 $o0 0	c"
-		echo "100644 $o0 0	d/e"
+		echo "100644 blob $o0	b" &&
+		echo "100644 blob $o0	c" &&
+		echo "100644 blob $o0	d/e" &&
+		echo "100644 blob $o0	e" &&
+		echo "100644 $o0 0	b" &&
+		echo "100644 $o0 0	c" &&
+		echo "100644 $o0 0	d/e" &&
 		echo "100644 $o0 0	e"
 	) >expected &&
 	test_cmp expected actual
@@ -617,17 +617,17 @@ test_expect_failure 'merge-recursive rename vs. rename/symlink' '
 
 	git checkout -f rename &&
 	git merge rename-ln &&
-	( git ls-tree -r HEAD ; git ls-files -s ) >actual &&
+	( git ls-tree -r HEAD && git ls-files -s ) >actual &&
 	(
-		echo "120000 blob $oln	a"
-		echo "100644 blob $o0	b"
-		echo "100644 blob $o0	c"
-		echo "100644 blob $o0	d/e"
-		echo "100644 blob $o0	e"
-		echo "120000 $oln 0	a"
-		echo "100644 $o0 0	b"
-		echo "100644 $o0 0	c"
-		echo "100644 $o0 0	d/e"
+		echo "120000 blob $oln	a" &&
+		echo "100644 blob $o0	b" &&
+		echo "100644 blob $o0	c" &&
+		echo "100644 blob $o0	d/e" &&
+		echo "100644 blob $o0	e" &&
+		echo "120000 $oln 0	a" &&
+		echo "100644 $o0 0	b" &&
+		echo "100644 $o0 0	c" &&
+		echo "100644 $o0 0	d/e" &&
 		echo "100644 $o0 0	e"
 	) >expected &&
 	test_cmp expected actual
diff --git a/t/t3050-subprojects-fetch.sh b/t/t3050-subprojects-fetch.sh
index 2f5f41a012..f1f09abdd9 100755
--- a/t/t3050-subprojects-fetch.sh
+++ b/t/t3050-subprojects-fetch.sh
@@ -21,10 +21,10 @@ test_expect_success setup '
 
 test_expect_success clone '
 	git clone "file://$(pwd)/.git" cloned &&
-	(git rev-parse HEAD; git ls-files -s) >expected &&
+	(git rev-parse HEAD && git ls-files -s) >expected &&
 	(
 		cd cloned &&
-		(git rev-parse HEAD; git ls-files -s) >../actual
+		(git rev-parse HEAD && git ls-files -s) >../actual
 	) &&
 	test_cmp expected actual
 '
@@ -40,11 +40,11 @@ test_expect_success advance '
 '
 
 test_expect_success fetch '
-	(git rev-parse HEAD; git ls-files -s) >expected &&
+	(git rev-parse HEAD && git ls-files -s) >expected &&
 	(
 		cd cloned &&
 		git pull &&
-		(git rev-parse HEAD; git ls-files -s) >../actual
+		(git rev-parse HEAD && git ls-files -s) >../actual
 	) &&
 	test_cmp expected actual
 '
diff --git a/t/t3102-ls-tree-wildcards.sh b/t/t3102-ls-tree-wildcards.sh
index e804377f1c..1e16c6b8ea 100755
--- a/t/t3102-ls-tree-wildcards.sh
+++ b/t/t3102-ls-tree-wildcards.sh
@@ -23,7 +23,7 @@ test_expect_success 'ls-tree outside prefix' '
 	cat >expect <<-EOF &&
 	100644 blob $EMPTY_BLOB	../a[a]/three
 	EOF
-	( cd aa && git ls-tree -r HEAD "../a[a]"; ) >actual &&
+	( cd aa && git ls-tree -r HEAD "../a[a]" ) >actual &&
 	test_cmp expect actual
 '
 
diff --git a/t/t3210-pack-refs.sh b/t/t3210-pack-refs.sh
index afa27ffe2d..724b4b9bc0 100755
--- a/t/t3210-pack-refs.sh
+++ b/t/t3210-pack-refs.sh
@@ -231,9 +231,9 @@ test_expect_success 'timeout if packed-refs.lock exists' '
 test_expect_success 'retry acquiring packed-refs.lock' '
 	LOCK=.git/packed-refs.lock &&
 	>"$LOCK" &&
-	test_when_finished "wait; rm -f $LOCK" &&
+	test_when_finished "wait && rm -f $LOCK" &&
 	{
-		( sleep 1 ; rm -f $LOCK ) &
+		( sleep 1 && rm -f $LOCK ) &
 	} &&
 	git -c core.packedrefstimeout=3000 pack-refs --all --prune
 '
diff --git a/t/t3301-notes.sh b/t/t3301-notes.sh
index 2d200fdf36..ac62dc0e8f 100755
--- a/t/t3301-notes.sh
+++ b/t/t3301-notes.sh
@@ -914,7 +914,7 @@ test_expect_success 'git notes copy --stdin' '
 		${indent}
 		${indent}yet another note
 	EOF
-	(echo $(git rev-parse HEAD~3) $(git rev-parse HEAD^); \
+	(echo $(git rev-parse HEAD~3) $(git rev-parse HEAD^) &&
 	echo $(git rev-parse HEAD~2) $(git rev-parse HEAD)) |
 	git notes copy --stdin &&
 	git log -2 >actual &&
@@ -939,7 +939,7 @@ test_expect_success 'git notes copy --for-rewrite (unconfigured)' '
 	EOF
 	test_commit 14th &&
 	test_commit 15th &&
-	(echo $(git rev-parse HEAD~3) $(git rev-parse HEAD^); \
+	(echo $(git rev-parse HEAD~3) $(git rev-parse HEAD^) &&
 	echo $(git rev-parse HEAD~2) $(git rev-parse HEAD)) |
 	git notes copy --for-rewrite=foo &&
 	git log -2 >actual &&
@@ -972,7 +972,7 @@ test_expect_success 'git notes copy --for-rewrite (enabled)' '
 	EOF
 	test_config notes.rewriteMode overwrite &&
 	test_config notes.rewriteRef "refs/notes/*" &&
-	(echo $(git rev-parse HEAD~3) $(git rev-parse HEAD^); \
+	(echo $(git rev-parse HEAD~3) $(git rev-parse HEAD^) &&
 	echo $(git rev-parse HEAD~2) $(git rev-parse HEAD)) |
 	git notes copy --for-rewrite=foo &&
 	git log -2 >actual &&
@@ -1059,7 +1059,7 @@ test_expect_success 'git notes copy --for-rewrite (append two to one)' '
 	git notes add -f -m"append 2" HEAD^^ &&
 	test_config notes.rewriteMode concatenate &&
 	test_config notes.rewriteRef "refs/notes/*" &&
-	(echo $(git rev-parse HEAD^) $(git rev-parse HEAD);
+	(echo $(git rev-parse HEAD^) $(git rev-parse HEAD) &&
 	echo $(git rev-parse HEAD^^) $(git rev-parse HEAD)) |
 	git notes copy --for-rewrite=foo &&
 	git log -1 >actual &&
diff --git a/t/t3400-rebase.sh b/t/t3400-rebase.sh
index 72d9564747..3996ee0135 100755
--- a/t/t3400-rebase.sh
+++ b/t/t3400-rebase.sh
@@ -200,10 +200,10 @@ test_expect_success 'rebase -q is quiet' '
 
 test_expect_success 'Rebase a commit that sprinkles CRs in' '
 	(
-		echo "One"
-		echo "TwoQ"
-		echo "Three"
-		echo "FQur"
+		echo "One" &&
+		echo "TwoQ" &&
+		echo "Three" &&
+		echo "FQur" &&
 		echo "Five"
 	) | q_to_cr >CR &&
 	git add CR &&
diff --git a/t/t3402-rebase-merge.sh b/t/t3402-rebase-merge.sh
index 488945e007..a1ec501a87 100755
--- a/t/t3402-rebase-merge.sh
+++ b/t/t3402-rebase-merge.sh
@@ -25,7 +25,7 @@ test_expect_success setup '
 	git commit -a -m"master updates a bit more." &&
 
 	git checkout side &&
-	(echo "0 $T" ; cat original) >renamed &&
+	(echo "0 $T" && cat original) >renamed &&
 	git add renamed &&
 	git update-index --force-remove original &&
 	git commit -a -m"side renames and edits." &&
@@ -143,7 +143,7 @@ test_expect_success 'rebase -s funny -Xopt' '
 	git checkout -b test-funny master^ &&
 	test_commit funny &&
 	(
-		PATH=./test-bin:$PATH
+		PATH=./test-bin:$PATH &&
 		git rebase -s funny -Xopt master
 	) &&
 	test -f funny.was.run
diff --git a/t/t3404-rebase-interactive.sh b/t/t3404-rebase-interactive.sh
index 01616901bd..46657ceadd 100755
--- a/t/t3404-rebase-interactive.sh
+++ b/t/t3404-rebase-interactive.sh
@@ -516,7 +516,7 @@ test_expect_success 'interrupted squash works as expected' '
 	one=$(git rev-parse HEAD~3) &&
 	set_fake_editor &&
 	test_must_fail env FAKE_LINES="1 squash 3 2" git rebase -i HEAD~3 &&
-	(echo one; echo two; echo four) > conflict &&
+	test_write_lines one two four > conflict &&
 	git add conflict &&
 	test_must_fail git rebase --continue &&
 	echo resolved > conflict &&
@@ -530,10 +530,10 @@ test_expect_success 'interrupted squash works as expected (case 2)' '
 	one=$(git rev-parse HEAD~3) &&
 	set_fake_editor &&
 	test_must_fail env FAKE_LINES="3 squash 1 2" git rebase -i HEAD~3 &&
-	(echo one; echo four) > conflict &&
+	test_write_lines one four > conflict &&
 	git add conflict &&
 	test_must_fail git rebase --continue &&
-	(echo one; echo two; echo four) > conflict &&
+	test_write_lines one two four > conflict &&
 	git add conflict &&
 	test_must_fail git rebase --continue &&
 	echo resolved > conflict &&
diff --git a/t/t3418-rebase-continue.sh b/t/t3418-rebase-continue.sh
index c145dbac38..65ed7db159 100755
--- a/t/t3418-rebase-continue.sh
+++ b/t/t3418-rebase-continue.sh
@@ -60,7 +60,7 @@ test_expect_success 'rebase --continue remembers merge strategy and options' '
 	EOF
 	chmod +x test-bin/git-merge-funny &&
 	(
-		PATH=./test-bin:$PATH
+		PATH=./test-bin:$PATH &&
 		test_must_fail git rebase -s funny -Xopt master topic
 	) &&
 	test -f funny.was.run &&
@@ -68,7 +68,7 @@ test_expect_success 'rebase --continue remembers merge strategy and options' '
 	echo "Resolved" >F2 &&
 	git add F2 &&
 	(
-		PATH=./test-bin:$PATH
+		PATH=./test-bin:$PATH &&
 		git rebase --continue
 	) &&
 	test -f funny.was.run
diff --git a/t/t3700-add.sh b/t/t3700-add.sh
index 07af05d7ae..618750167a 100755
--- a/t/t3700-add.sh
+++ b/t/t3700-add.sh
@@ -156,9 +156,9 @@ test_expect_success 'git add with filemode=0, symlinks=0, and unmerged entries'
 test_expect_success 'git add with filemode=0, symlinks=0 prefers stage 2 over stage 1' '
 	git rm --cached -f file symlink &&
 	(
-		echo "100644 $(git hash-object -w stage1) 1	file"
-		echo "100755 $(git hash-object -w stage2) 2	file"
-		echo "100644 $(printf 1 | git hash-object -w -t blob --stdin) 1	symlink"
+		echo "100644 $(git hash-object -w stage1) 1	file" &&
+		echo "100755 $(git hash-object -w stage2) 2	file" &&
+		echo "100644 $(printf 1 | git hash-object -w -t blob --stdin) 1	symlink" &&
 		echo "120000 $(printf 2 | git hash-object -w -t blob --stdin) 2	symlink"
 	) | git update-index --index-info &&
 	git config core.filemode 0 &&
@@ -265,7 +265,7 @@ test_expect_success 'git add to resolve conflicts on otherwise ignored path' '
 	git reset --hard &&
 	H=$(git rev-parse :1/2/a) &&
 	(
-		echo "100644 $H 1	track-this"
+		echo "100644 $H 1	track-this" &&
 		echo "100644 $H 3	track-this"
 	) | git update-index --index-info &&
 	echo track-this >>.gitignore &&
diff --git a/t/t3701-add-interactive.sh b/t/t3701-add-interactive.sh
index 3e9139dca8..609fbfdc31 100755
--- a/t/t3701-add-interactive.sh
+++ b/t/t3701-add-interactive.sh
@@ -46,13 +46,13 @@ test_expect_success 'setup expected' '
 '
 
 test_expect_success 'diff works (initial)' '
-	(echo d; echo 1) | git add -i >output &&
+	test_write_lines d 1 | git add -i >output &&
 	sed -ne "/new file/,/content/p" <output >diff &&
 	diff_cmp expected diff
 '
 test_expect_success 'revert works (initial)' '
 	git add file &&
-	(echo r; echo 1) | git add -i &&
+	test_write_lines r 1 | git add -i &&
 	git ls-files >output &&
 	! grep . output
 '
@@ -83,13 +83,13 @@ test_expect_success 'setup expected' '
 '
 
 test_expect_success 'diff works (commit)' '
-	(echo d; echo 1) | git add -i >output &&
+	test_write_lines d 1 | git add -i >output &&
 	sed -ne "/^index/,/content/p" <output >diff &&
 	diff_cmp expected diff
 '
 test_expect_success 'revert works (commit)' '
 	git add file &&
-	(echo r; echo 1) | git add -i &&
+	test_write_lines r 1 | git add -i &&
 	git add -i </dev/null >output &&
 	grep "unchanged *+3/-0 file" output
 '
@@ -102,7 +102,7 @@ test_expect_success 'setup expected' '
 
 test_expect_success 'dummy edit works' '
 	test_set_editor : &&
-	(echo e; echo a) | git add -p &&
+	test_write_lines e a | git add -p &&
 	git diff > diff &&
 	diff_cmp expected diff
 '
@@ -127,7 +127,7 @@ test_expect_success 'setup fake editor' '
 
 test_expect_success 'bad edit rejected' '
 	git reset &&
-	(echo e; echo n; echo d) | git add -p >output &&
+	test_write_lines e n d | git add -p >output &&
 	grep "hunk does not apply" output
 '
 
@@ -140,7 +140,7 @@ test_expect_success 'setup patch' '
 
 test_expect_success 'garbage edit rejected' '
 	git reset &&
-	(echo e; echo n; echo d) | git add -p >output &&
+	test_write_lines e n d | git add -p >output &&
 	grep "hunk does not apply" output
 '
 
@@ -170,7 +170,7 @@ test_expect_success 'setup expected' '
 '
 
 test_expect_success 'real edit works' '
-	(echo e; echo n; echo d) | git add -p &&
+	test_write_lines e n d | git add -p &&
 	git diff >output &&
 	diff_cmp expected output
 '
diff --git a/t/t3904-stash-patch.sh b/t/t3904-stash-patch.sh
index 83744f8c93..9546b6f8a4 100755
--- a/t/t3904-stash-patch.sh
+++ b/t/t3904-stash-patch.sh
@@ -29,14 +29,14 @@ test_expect_success 'setup' '
 test_expect_success 'saying "n" does nothing' '
 	set_state HEAD HEADfile_work HEADfile_index &&
 	set_state dir/foo work index &&
-	(echo n; echo n; echo n) | test_must_fail git stash save -p &&
+	test_write_lines n n n | test_must_fail git stash save -p &&
 	verify_state HEAD HEADfile_work HEADfile_index &&
 	verify_saved_state bar &&
 	verify_state dir/foo work index
 '
 
 test_expect_success 'git stash -p' '
-	(echo y; echo n; echo y) | git stash save -p &&
+	test_write_lines y n y | git stash save -p &&
 	verify_state HEAD committed HEADfile_index &&
 	verify_saved_state bar &&
 	verify_state dir/foo head index &&
@@ -51,7 +51,7 @@ test_expect_success 'git stash -p --no-keep-index' '
 	set_state HEAD HEADfile_work HEADfile_index &&
 	set_state bar bar_work bar_index &&
 	set_state dir/foo work index &&
-	(echo y; echo n; echo y) | git stash save -p --no-keep-index &&
+	test_write_lines y n y | git stash save -p --no-keep-index &&
 	verify_state HEAD committed committed &&
 	verify_state bar bar_work dummy &&
 	verify_state dir/foo head head &&
@@ -66,7 +66,7 @@ test_expect_success 'git stash --no-keep-index -p' '
 	set_state HEAD HEADfile_work HEADfile_index &&
 	set_state bar bar_work bar_index &&
 	set_state dir/foo work index &&
-	(echo y; echo n; echo y) | git stash save --no-keep-index -p &&
+	test_write_lines y n y | git stash save --no-keep-index -p &&
 	verify_state HEAD committed committed &&
 	verify_state dir/foo head head &&
 	verify_state bar bar_work dummy &&
diff --git a/t/t4001-diff-rename.sh b/t/t4001-diff-rename.sh
index bf4030371a..c16486a9d4 100755
--- a/t/t4001-diff-rename.sh
+++ b/t/t4001-diff-rename.sh
@@ -180,7 +180,7 @@ test_expect_success 'setup for many rename source candidates' '
 	git add "path??" &&
 	test_tick &&
 	git commit -m "hundred" &&
-	(cat path1; echo new) >new-path &&
+	(cat path1 && echo new) >new-path &&
 	echo old >>path1 &&
 	git add new-path path1 &&
 	git diff -l 4 -C -C --cached --name-status >actual 2>actual.err &&
diff --git a/t/t4010-diff-pathspec.sh b/t/t4010-diff-pathspec.sh
index 35b35a81c8..b7f25071cf 100755
--- a/t/t4010-diff-pathspec.sh
+++ b/t/t4010-diff-pathspec.sh
@@ -111,10 +111,10 @@ test_expect_success 'diff-tree -r with wildcard' '
 test_expect_success 'setup submodules' '
 	test_tick &&
 	git init submod &&
-	( cd submod && test_commit first; ) &&
+	( cd submod && test_commit first ) &&
 	git add submod &&
 	git commit -m first &&
-	( cd submod && test_commit second; ) &&
+	( cd submod && test_commit second ) &&
 	git add submod &&
 	git commit -m second
 '
diff --git a/t/t4012-diff-binary.sh b/t/t4012-diff-binary.sh
index 0a8af76aab..6579c81216 100755
--- a/t/t4012-diff-binary.sh
+++ b/t/t4012-diff-binary.sh
@@ -102,10 +102,8 @@ test_expect_success 'apply binary patch' '
 
 test_expect_success 'diff --no-index with binary creation' '
 	echo Q | q_to_nul >binary &&
-	(: hide error code from diff, which just indicates differences
-	 git diff --binary --no-index /dev/null binary >current ||
-	 true
-	) &&
+	# hide error code from diff, which just indicates differences
+	test_might_fail git diff --binary --no-index /dev/null binary >current &&
 	rm binary &&
 	git apply --binary <current &&
 	echo Q >expected &&
diff --git a/t/t4024-diff-optimize-common.sh b/t/t4024-diff-optimize-common.sh
index 7e76018296..6b44ce1493 100755
--- a/t/t4024-diff-optimize-common.sh
+++ b/t/t4024-diff-optimize-common.sh
@@ -127,17 +127,17 @@ test_expect_success setup '
 
 	for n in $sample
 	do
-		( zs $n ; echo a ) >file-a$n &&
-		( echo b; zs $n; echo ) >file-b$n &&
-		( printf c; zs $n ) >file-c$n &&
-		( echo d; zs $n ) >file-d$n &&
+		( zs $n && echo a ) >file-a$n &&
+		( echo b && zs $n && echo ) >file-b$n &&
+		( printf c && zs $n ) >file-c$n &&
+		( echo d && zs $n ) >file-d$n &&
 
 		git add file-a$n file-b$n file-c$n file-d$n &&
 
-		( zs $n ; echo A ) >file-a$n &&
-		( echo B; zs $n; echo ) >file-b$n &&
-		( printf C; zs $n ) >file-c$n &&
-		( echo D; zs $n ) >file-d$n &&
+		( zs $n && echo A ) >file-a$n &&
+		( echo B && zs $n && echo ) >file-b$n &&
+		( printf C && zs $n ) >file-c$n &&
+		( echo D && zs $n ) >file-d$n &&
 
 		expect_pattern $n || return 1
 
diff --git a/t/t4025-hunk-header.sh b/t/t4025-hunk-header.sh
index 7a3dbc1ea2..fa44e78869 100755
--- a/t/t4025-hunk-header.sh
+++ b/t/t4025-hunk-header.sh
@@ -12,12 +12,12 @@ NS="$N$N$N$N$N$N$N$N$N$N$N$N$N"
 test_expect_success setup '
 
 	(
-		echo "A $NS"
+		echo "A $NS" &&
 		for c in B C D E F G H I J K
 		do
 			echo "  $c"
-		done
-		echo "L  $NS"
+		done &&
+		echo "L  $NS" &&
 		for c in M N O P Q R S T U V
 		do
 			echo "  $c"
@@ -34,7 +34,7 @@ test_expect_success 'hunk header truncation with an overly long line' '
 
 	git diff | sed -n -e "s/^.*@@//p" >actual &&
 	(
-		echo " A $N$N$N$N$N$N$N$N$N2"
+		echo " A $N$N$N$N$N$N$N$N$N2" &&
 		echo " L  $N$N$N$N$N$N$N$N$N1"
 	) >expected &&
 	test_cmp actual expected
diff --git a/t/t4041-diff-submodule-option.sh b/t/t4041-diff-submodule-option.sh
index 058ee0829d..4e3499ef84 100755
--- a/t/t4041-diff-submodule-option.sh
+++ b/t/t4041-diff-submodule-option.sh
@@ -498,7 +498,7 @@ test_expect_success 'given commit --submodule=short' '
 test_expect_success 'setup .git file for sm2' '
 	(cd sm2 &&
 	 REAL="$(pwd)/../.real" &&
-	 mv .git "$REAL"
+	 mv .git "$REAL" &&
 	 echo "gitdir: $REAL" >.git)
 '
 
@@ -527,7 +527,7 @@ test_expect_success 'diff --submodule with objects referenced by alternates' '
 		git commit -m "sub a"
 	) &&
 	(cd sub_alt &&
-		sha1_before=$(git rev-parse --short HEAD)
+		sha1_before=$(git rev-parse --short HEAD) &&
 		echo b >b &&
 		git add b &&
 		git commit -m b &&
diff --git a/t/t4060-diff-submodule-option-diff-format.sh b/t/t4060-diff-submodule-option-diff-format.sh
index 4b168d0ed7..0eba4620f0 100755
--- a/t/t4060-diff-submodule-option-diff-format.sh
+++ b/t/t4060-diff-submodule-option-diff-format.sh
@@ -721,7 +721,7 @@ test_expect_success 'given commit' '
 test_expect_success 'setup .git file for sm2' '
 	(cd sm2 &&
 	 REAL="$(pwd)/../.real" &&
-	 mv .git "$REAL"
+	 mv .git "$REAL" &&
 	 echo "gitdir: $REAL" >.git)
 '
 
diff --git a/t/t4121-apply-diffs.sh b/t/t4121-apply-diffs.sh
index aff551a1d7..66368effd5 100755
--- a/t/t4121-apply-diffs.sh
+++ b/t/t4121-apply-diffs.sh
@@ -27,6 +27,6 @@ test_expect_success 'setup' \
 
 test_expect_success \
 	'check if contextually independent diffs for the same file apply' \
-	'( git diff test~2 test~1; git diff test~1 test~0 )| git apply'
+	'( git diff test~2 test~1 && git diff test~1 test~0 )| git apply'
 
 test_done
diff --git a/t/t5300-pack-object.sh b/t/t5300-pack-object.sh
index 2336d09dcc..6c620cd540 100755
--- a/t/t5300-pack-object.sh
+++ b/t/t5300-pack-object.sh
@@ -191,7 +191,7 @@ test_expect_success 'survive missing objects/pack directory' '
 		mkdir missing-pack &&
 		cd missing-pack &&
 		git init &&
-		GOP=.git/objects/pack
+		GOP=.git/objects/pack &&
 		rm -fr $GOP &&
 		git index-pack --stdin --keep=test <../test-3-${packname_3}.pack &&
 		test -f $GOP/pack-${packname_3}.pack &&
diff --git a/t/t5302-pack-index.sh b/t/t5302-pack-index.sh
index bb9b8bb309..91d51b35f9 100755
--- a/t/t5302-pack-index.sh
+++ b/t/t5302-pack-index.sh
@@ -237,7 +237,7 @@ test_expect_success 'running index-pack in the object store' '
     rm -f .git/objects/pack/* &&
     cp test-1-${pack1}.pack .git/objects/pack/pack-${pack1}.pack &&
     (
-	cd .git/objects/pack
+	cd .git/objects/pack &&
 	git index-pack pack-${pack1}.pack
     ) &&
     test -f .git/objects/pack/pack-${pack1}.idx
diff --git a/t/t5400-send-pack.sh b/t/t5400-send-pack.sh
index 911eae1bf7..f1932ea431 100755
--- a/t/t5400-send-pack.sh
+++ b/t/t5400-send-pack.sh
@@ -86,7 +86,7 @@ test_expect_success 'push can be used to delete a ref' '
 test_expect_success 'refuse deleting push with denyDeletes' '
 	(
 	    cd victim &&
-	    ( git branch -D extra || : ) &&
+	    test_might_fail git branch -D extra &&
 	    git config receive.denyDeletes true &&
 	    git branch extra master
 	) &&
@@ -119,7 +119,7 @@ test_expect_success 'override denyDeletes with git -c receive-pack' '
 test_expect_success 'denyNonFastforwards trumps --force' '
 	(
 	    cd victim &&
-	    ( git branch -D extra || : ) &&
+	    test_might_fail git branch -D extra &&
 	    git config receive.denyNonFastforwards true
 	) &&
 	victim_orig=$(cd victim && git rev-parse --verify master) &&
diff --git a/t/t5401-update-hooks.sh b/t/t5401-update-hooks.sh
index 7f278d8ce9..b5f886a0e2 100755
--- a/t/t5401-update-hooks.sh
+++ b/t/t5401-update-hooks.sh
@@ -82,13 +82,13 @@ test_expect_success 'hooks ran' '
 '
 
 test_expect_success 'pre-receive hook input' '
-	(echo $commit0 $commit1 refs/heads/master;
+	(echo $commit0 $commit1 refs/heads/master &&
 	 echo $commit1 $commit0 refs/heads/tofail
 	) | test_cmp - victim.git/pre-receive.stdin
 '
 
 test_expect_success 'update hook arguments' '
-	(echo refs/heads/master $commit0 $commit1;
+	(echo refs/heads/master $commit0 $commit1 &&
 	 echo refs/heads/tofail $commit1 $commit0
 	) | test_cmp - victim.git/update.args
 '
diff --git a/t/t5405-send-pack-rewind.sh b/t/t5405-send-pack-rewind.sh
index 4bda18a662..235fb7686a 100755
--- a/t/t5405-send-pack-rewind.sh
+++ b/t/t5405-send-pack-rewind.sh
@@ -25,8 +25,7 @@ test_expect_success 'non forced push should die not segfault' '
 
 	(
 		cd another &&
-		git push .. master:master
-		test $? = 1
+		test_must_fail git push .. master:master
 	)
 
 '
diff --git a/t/t5406-remote-rejects.sh b/t/t5406-remote-rejects.sh
index 59e80a5ea2..ff06f99649 100755
--- a/t/t5406-remote-rejects.sh
+++ b/t/t5406-remote-rejects.sh
@@ -6,8 +6,9 @@ test_description='remote push rejects are reported by client'
 
 test_expect_success 'setup' '
 	mkdir .git/hooks &&
-	(echo "#!/bin/sh" ; echo "exit 1") >.git/hooks/update &&
-	chmod +x .git/hooks/update &&
+	write_script .git/hooks/update <<-\EOF &&
+	exit 1
+	EOF
 	echo 1 >file &&
 	git add file &&
 	git commit -m 1 &&
diff --git a/t/t5500-fetch-pack.sh b/t/t5500-fetch-pack.sh
index 3d33ab3875..0f0fefad1e 100755
--- a/t/t5500-fetch-pack.sh
+++ b/t/t5500-fetch-pack.sh
@@ -259,7 +259,7 @@ test_expect_success 'clone shallow object count' '
 test_expect_success 'pull in shallow repo with missing merge base' '
 	(
 		cd shallow &&
-		git fetch --depth 4 .. A
+		git fetch --depth 4 .. A &&
 		test_must_fail git merge --allow-unrelated-histories FETCH_HEAD
 	)
 '
diff --git a/t/t5505-remote.sh b/t/t5505-remote.sh
index a6c0178f3a..11e14a1e0f 100755
--- a/t/t5505-remote.sh
+++ b/t/t5505-remote.sh
@@ -348,17 +348,13 @@ URL: $(pwd)/one
 EOF
 
 test_expect_success 'prune --dry-run' '
-	(
-		cd one &&
-		git branch -m side2 side) &&
+	git -C one branch -m side2 side &&
+	test_when_finished "git -C one branch -m side side2" &&
 	(
 		cd test &&
 		git remote prune --dry-run origin >output &&
 		git rev-parse refs/remotes/origin/side2 &&
 		test_must_fail git rev-parse refs/remotes/origin/side &&
-	(
-		cd ../one &&
-		git branch -m side side2) &&
 		test_i18ncmp expect output
 	)
 '
@@ -848,7 +844,7 @@ test_expect_success 'migrate a remote from named file in $GIT_DIR/branches (2)'
 		git remote rename origin origin &&
 		test_path_is_missing .git/branches/origin &&
 		test "$(git config remote.origin.url)" = "quux" &&
-		test "$(git config remote.origin.fetch)" = "refs/heads/foom:refs/heads/origin"
+		test "$(git config remote.origin.fetch)" = "refs/heads/foom:refs/heads/origin" &&
 		test "$(git config remote.origin.push)" = "HEAD:refs/heads/foom"
 	)
 '
diff --git a/t/t5512-ls-remote.sh b/t/t5512-ls-remote.sh
index 6a949484d0..ea020040e8 100755
--- a/t/t5512-ls-remote.sh
+++ b/t/t5512-ls-remote.sh
@@ -15,7 +15,7 @@ test_expect_success setup '
 	git tag mark1.10 &&
 	git show-ref --tags -d | sed -e "s/ /	/" >expected.tag &&
 	(
-		echo "$(git rev-parse HEAD)	HEAD"
+		echo "$(git rev-parse HEAD)	HEAD" &&
 		git show-ref -d	| sed -e "s/ /	/"
 	) >expected.all &&
 
@@ -105,7 +105,7 @@ test_expect_success 'use branch.<name>.remote if possible' '
 	git clone . other.git &&
 	(
 		cd other.git &&
-		echo "$(git rev-parse HEAD)	HEAD"
+		echo "$(git rev-parse HEAD)	HEAD" &&
 		git show-ref	| sed -e "s/ /	/"
 	) >exp &&
 
diff --git a/t/t5516-fetch-push.sh b/t/t5516-fetch-push.sh
index a5077d8b7c..bd8f23e430 100755
--- a/t/t5516-fetch-push.sh
+++ b/t/t5516-fetch-push.sh
@@ -923,7 +923,7 @@ test_expect_success 'push into aliased refs (consistent)' '
 	(
 		cd child1 &&
 		git branch foo &&
-		git symbolic-ref refs/heads/bar refs/heads/foo
+		git symbolic-ref refs/heads/bar refs/heads/foo &&
 		git config receive.denyCurrentBranch false
 	) &&
 	(
@@ -945,7 +945,7 @@ test_expect_success 'push into aliased refs (inconsistent)' '
 	(
 		cd child1 &&
 		git branch foo &&
-		git symbolic-ref refs/heads/bar refs/heads/foo
+		git symbolic-ref refs/heads/bar refs/heads/foo &&
 		git config receive.denyCurrentBranch false
 	) &&
 	(
@@ -1011,7 +1011,7 @@ test_expect_success 'push --porcelain rejected' '
 	mk_empty testrepo &&
 	git push testrepo refs/heads/master:refs/remotes/origin/master &&
 	(cd testrepo &&
-		git reset --hard origin/master^
+		git reset --hard origin/master^ &&
 		git config receive.denyCurrentBranch true) &&
 
 	echo >.git/foo  "To testrepo"  &&
@@ -1025,7 +1025,7 @@ test_expect_success 'push --porcelain --dry-run rejected' '
 	mk_empty testrepo &&
 	git push testrepo refs/heads/master:refs/remotes/origin/master &&
 	(cd testrepo &&
-		git reset --hard origin/master
+		git reset --hard origin/master &&
 		git config receive.denyCurrentBranch true) &&
 
 	echo >.git/foo  "To testrepo"  &&
@@ -1333,7 +1333,7 @@ test_expect_success 'push --follow-tag only pushes relevant tags' '
 		git commit --allow-empty -m "future commit" &&
 		git tag -m "future" future &&
 		git checkout master &&
-		git for-each-ref refs/heads/master refs/tags/tag >../expect
+		git for-each-ref refs/heads/master refs/tags/tag >../expect &&
 		git push --follow-tag ../dst master
 	) &&
 	(
diff --git a/t/t5517-push-mirror.sh b/t/t5517-push-mirror.sh
index 02f160aae0..c05a661400 100755
--- a/t/t5517-push-mirror.sh
+++ b/t/t5517-push-mirror.sh
@@ -71,7 +71,7 @@ test_expect_success 'push mirror force updates existing branches' '
 		git push --mirror up &&
 		echo two >foo && git add foo && git commit -m two &&
 		git push --mirror up &&
-		git reset --hard HEAD^
+		git reset --hard HEAD^ &&
 		git push --mirror up
 	) &&
 	master_master=$(cd master && git show-ref -s --verify refs/heads/master) &&
@@ -88,7 +88,7 @@ test_expect_success 'push mirror removes branches' '
 		echo one >foo && git add foo && git commit -m one &&
 		git branch remove master &&
 		git push --mirror up &&
-		git branch -D remove
+		git branch -D remove &&
 		git push --mirror up
 	) &&
 	(
@@ -170,7 +170,7 @@ test_expect_success 'push mirror force updates existing tags' '
 		echo two >foo && git add foo && git commit -m two &&
 		git tag -f tmaster master &&
 		git push --mirror up &&
-		git reset --hard HEAD^
+		git reset --hard HEAD^ &&
 		git tag -f tmaster master &&
 		git push --mirror up
 	) &&
@@ -188,7 +188,7 @@ test_expect_success 'push mirror removes tags' '
 		echo one >foo && git add foo && git commit -m one &&
 		git tag -f tremove master &&
 		git push --mirror up &&
-		git tag -d tremove
+		git tag -d tremove &&
 		git push --mirror up
 	) &&
 	(
@@ -235,7 +235,7 @@ test_expect_success 'remote.foo.mirror adds and removes branches' '
 		git branch keep master &&
 		git branch remove master &&
 		git push up &&
-		git branch -D remove
+		git branch -D remove &&
 		git push up
 	) &&
 	(
diff --git a/t/t5526-fetch-submodules.sh b/t/t5526-fetch-submodules.sh
index 359e03ff83..0f730d7781 100755
--- a/t/t5526-fetch-submodules.sh
+++ b/t/t5526-fetch-submodules.sh
@@ -379,7 +379,7 @@ test_expect_success "'--recurse-submodules=on-demand' recurses as deep as necess
 			git config -f .gitmodules submodule.subdir/deepsubmodule.fetchRecursive false
 		) &&
 		git fetch --recurse-submodules=on-demand >../actual.out 2>../actual.err &&
-		git config --unset fetch.recurseSubmodules
+		git config --unset fetch.recurseSubmodules &&
 		(
 			cd submodule &&
 			git config --unset -f .gitmodules submodule.subdir/deepsubmodule.fetchRecursive
diff --git a/t/t5531-deep-submodule-push.sh b/t/t5531-deep-submodule-push.sh
index 39cb2c1c34..e2c37fd978 100755
--- a/t/t5531-deep-submodule-push.sh
+++ b/t/t5531-deep-submodule-push.sh
@@ -354,7 +354,7 @@ test_expect_success 'push succeeds if submodule has no remote and is on the firs
 	git clone a a1 &&
 	(
 		cd a1 &&
-		git init b
+		git init b &&
 		(
 			cd b &&
 			>junk &&
diff --git a/t/t5543-atomic-push.sh b/t/t5543-atomic-push.sh
index 3480b33007..7079bcf9a0 100755
--- a/t/t5543-atomic-push.sh
+++ b/t/t5543-atomic-push.sh
@@ -178,7 +178,7 @@ test_expect_success 'atomic push obeys update hook preventing a branch to be pus
 test_expect_success 'atomic push is not advertised if configured' '
 	mk_repo_pair &&
 	(
-		cd upstream
+		cd upstream &&
 		git config receive.advertiseatomic 0
 	) &&
 	(
diff --git a/t/t5601-clone.sh b/t/t5601-clone.sh
index 0b62037744..ddaa96ac4f 100755
--- a/t/t5601-clone.sh
+++ b/t/t5601-clone.sh
@@ -618,7 +618,7 @@ hex2oct () {
 test_expect_success 'clone on case-insensitive fs' '
 	git init icasefs &&
 	(
-		cd icasefs
+		cd icasefs &&
 		o=$(git hash-object -w --stdin </dev/null | hex2oct) &&
 		t=$(printf "100644 X\0${o}100644 x\0${o}" |
 			git hash-object -w -t tree --stdin) &&
diff --git a/t/t5605-clone-local.sh b/t/t5605-clone-local.sh
index 3c087e907c..af23419ebf 100755
--- a/t/t5605-clone-local.sh
+++ b/t/t5605-clone-local.sh
@@ -94,7 +94,7 @@ test_expect_success 'clone empty repository' '
 	 git config receive.denyCurrentBranch warn) &&
 	git clone empty empty-clone &&
 	test_tick &&
-	(cd empty-clone
+	(cd empty-clone &&
 	 echo "content" >> foo &&
 	 git add foo &&
 	 git commit -m "Initial commit" &&
diff --git a/t/t5608-clone-2gb.sh b/t/t5608-clone-2gb.sh
index df822d9a3e..2c6bc07344 100755
--- a/t/t5608-clone-2gb.sh
+++ b/t/t5608-clone-2gb.sh
@@ -23,7 +23,7 @@ test_expect_success CLONE_2GB 'setup' '
 		printf "blob\nmark :$i\ndata $blobsize\n" &&
 		#test-tool genrandom $i $blobsize &&
 		printf "%-${blobsize}s" $i &&
-		echo "M 100644 :$i $i" >> commit
+		echo "M 100644 :$i $i" >> commit &&
 		i=$(($i+1)) ||
 		echo $? > exit-status
 	 done &&
diff --git a/t/t5801-remote-helpers.sh b/t/t5801-remote-helpers.sh
index 362b1581e0..ee5757966f 100755
--- a/t/t5801-remote-helpers.sh
+++ b/t/t5801-remote-helpers.sh
@@ -96,7 +96,7 @@ test_expect_success 'push new branch with old:new refspec' '
 
 test_expect_success 'push new branch with HEAD:new refspec' '
 	(cd local &&
-	 git checkout new-name
+	 git checkout new-name &&
 	 git push origin HEAD:new-refspec-2
 	) &&
 	compare_refs local HEAD server refs/heads/new-refspec-2
diff --git a/t/t6010-merge-base.sh b/t/t6010-merge-base.sh
index aa2d360ce3..44c726ea39 100755
--- a/t/t6010-merge-base.sh
+++ b/t/t6010-merge-base.sh
@@ -245,7 +245,7 @@ test_expect_success 'using reflog to find the fork point' '
 			git commit --allow-empty -m "Derived #$count" &&
 			git rev-parse HEAD >derived$count &&
 			git checkout -B base $E || exit 1
-		done
+		done &&
 
 		for count in 1 2 3
 		do
diff --git a/t/t6029-merge-subtree.sh b/t/t6029-merge-subtree.sh
index 3e692454a7..7d5bc78472 100755
--- a/t/t6029-merge-subtree.sh
+++ b/t/t6029-merge-subtree.sh
@@ -55,7 +55,7 @@ test_expect_success 'initial merge' '
 	git checkout -b work &&
 	git ls-files -s >actual &&
 	(
-		echo "100644 $o1 0	git-gui/git-gui.sh"
+		echo "100644 $o1 0	git-gui/git-gui.sh" &&
 		echo "100644 $o2 0	git.c"
 	) >expected &&
 	test_cmp expected actual
@@ -72,7 +72,7 @@ test_expect_success 'merge update' '
 	git pull -s subtree gui master2 &&
 	git ls-files -s >actual &&
 	(
-		echo "100644 $o3 0	git-gui/git-gui.sh"
+		echo "100644 $o3 0	git-gui/git-gui.sh" &&
 		echo "100644 $o2 0	git.c"
 	) >expected &&
 	test_cmp expected actual
@@ -88,8 +88,8 @@ test_expect_success 'initial ambiguous subtree' '
 	git checkout -b work2 &&
 	git ls-files -s >actual &&
 	(
-		echo "100644 $o1 0	git-gui/git-gui.sh"
-		echo "100644 $o1 0	git-gui2/git-gui.sh"
+		echo "100644 $o1 0	git-gui/git-gui.sh" &&
+		echo "100644 $o1 0	git-gui2/git-gui.sh" &&
 		echo "100644 $o2 0	git.c"
 	) >expected &&
 	test_cmp expected actual
@@ -101,8 +101,8 @@ test_expect_success 'merge using explicit' '
 	git pull -Xsubtree=git-gui gui master2 &&
 	git ls-files -s >actual &&
 	(
-		echo "100644 $o3 0	git-gui/git-gui.sh"
-		echo "100644 $o1 0	git-gui2/git-gui.sh"
+		echo "100644 $o3 0	git-gui/git-gui.sh" &&
+		echo "100644 $o1 0	git-gui2/git-gui.sh" &&
 		echo "100644 $o2 0	git.c"
 	) >expected &&
 	test_cmp expected actual
@@ -114,8 +114,8 @@ test_expect_success 'merge2 using explicit' '
 	git pull -Xsubtree=git-gui2 gui master2 &&
 	git ls-files -s >actual &&
 	(
-		echo "100644 $o1 0	git-gui/git-gui.sh"
-		echo "100644 $o3 0	git-gui2/git-gui.sh"
+		echo "100644 $o1 0	git-gui/git-gui.sh" &&
+		echo "100644 $o3 0	git-gui2/git-gui.sh" &&
 		echo "100644 $o2 0	git.c"
 	) >expected &&
 	test_cmp expected actual
diff --git a/t/t6036-recursive-corner-cases.sh b/t/t6036-recursive-corner-cases.sh
index ef1c26ec58..4abe8a06e7 100755
--- a/t/t6036-recursive-corner-cases.sh
+++ b/t/t6036-recursive-corner-cases.sh
@@ -72,7 +72,7 @@ test_expect_success 'merge simple rename+criss-cross with no modifications' '
 		git rev-parse   >actual     \
 			:2:three   :3:three &&
 		git hash-object >>actual    \
-			three~HEAD three~R2^0
+			three~HEAD three~R2^0 &&
 		test_cmp expect actual
 	)
 '
@@ -148,7 +148,7 @@ test_expect_success 'merge criss-cross + rename merges with basic modification'
 		git rev-parse   >actual     \
 			:2:three   :3:three &&
 		git hash-object >>actual    \
-			three~HEAD three~R2^0
+			three~HEAD three~R2^0 &&
 		test_cmp expect actual
 	)
 '
@@ -228,7 +228,7 @@ test_expect_success 'git detects differently handled merges conflict' '
 			D:new_a  E:new_a &&
 		git rev-parse   >actual     \
 			:2:new_a :3:new_a &&
-		test_cmp expect actual
+		test_cmp expect actual &&
 
 		git cat-file -p B:new_a >ours &&
 		git cat-file -p C:new_a >theirs &&
@@ -577,10 +577,10 @@ test_expect_success 'merge of D1 & E2 fails but has appropriate contents' '
 		test_line_count = 2 out &&
 
 		git rev-parse >expect    \
-			B:a   E2:a/file  c:a/file   A:ignore-me &&
+			B:a   E2:a/file  C:a/file   A:ignore-me &&
 		git rev-parse   >actual   \
 			:2:a  :3:a/file  :1:a/file  :0:ignore-me &&
-		test_cmp expect actual
+		test_cmp expect actual &&
 
 		test_path_is_file a~HEAD
 	)
@@ -604,10 +604,10 @@ test_expect_success 'merge of E2 & D1 fails but has appropriate contents' '
 		test_line_count = 2 out &&
 
 		git rev-parse >expect    \
-			B:a   E2:a/file  c:a/file   A:ignore-me &&
+			B:a   E2:a/file  C:a/file   A:ignore-me &&
 		git rev-parse   >actual   \
 			:3:a  :2:a/file  :1:a/file  :0:ignore-me &&
-		test_cmp expect actual
+		test_cmp expect actual &&
 
 		test_path_is_file a~D1^0
 	)
diff --git a/t/t6042-merge-rename-corner-cases.sh b/t/t6042-merge-rename-corner-cases.sh
index 1cbd946fc2..661b633478 100755
--- a/t/t6042-merge-rename-corner-cases.sh
+++ b/t/t6042-merge-rename-corner-cases.sh
@@ -352,7 +352,7 @@ test_expect_success 'rename/directory conflict + content merge conflict' '
 			base:file   left-conflict:newfile  right:file &&
 		git rev-parse >actual                                 \
 			:1:newfile  :2:newfile             :3:newfile &&
-		test_cmp expect actual
+		test_cmp expect actual &&
 
 		test_path_is_file newfile/realfile &&
 		test_path_is_file newfile~HEAD
@@ -580,7 +580,7 @@ test_expect_failure 'detect conflict with rename/rename(1to2)/add-source merge'
 			C:a   A:a   B:b   C:C &&
 		git rev-parse >actual          \
 			:3:a  :1:a  :2:b  :3:c &&
-		test_cmp expect actual
+		test_cmp expect actual &&
 
 		test_path_is_file a &&
 		test_path_is_file b &&
@@ -680,13 +680,13 @@ test_expect_success 'rename/rename/add-dest merge still knows about conflicting
 			A:a   C:b   B:b   C:c   B:c &&
 		git rev-parse >actual                \
 			:1:a  :2:b  :3:b  :2:c  :3:c &&
-		test_cmp expect actual
+		test_cmp expect actual &&
 
 		git rev-parse >expect               \
 			C:c     B:c     C:b     B:b &&
 		git hash-object >actual                \
 			c~HEAD  c~B\^0  b~HEAD  b~B\^0 &&
-		test_cmp expect actual
+		test_cmp expect actual &&
 
 		test_path_is_missing b &&
 		test_path_is_missing c
diff --git a/t/t6043-merge-rename-directories.sh b/t/t6043-merge-rename-directories.sh
index 2e28f2908d..4a71f17edd 100755
--- a/t/t6043-merge-rename-directories.sh
+++ b/t/t6043-merge-rename-directories.sh
@@ -3583,7 +3583,7 @@ test_expect_success '11d-check: Avoid losing not-uptodate with rename + D/F conf
 		grep -q stuff z/c &&
 		test_seq 1 10 >expected &&
 		echo stuff >>expected &&
-		test_cmp expected z/c
+		test_cmp expected z/c &&
 
 		git ls-files -s >out &&
 		test_line_count = 4 out &&
diff --git a/t/t7001-mv.sh b/t/t7001-mv.sh
index cc3fd2baf2..9e59e5a5dd 100755
--- a/t/t7001-mv.sh
+++ b/t/t7001-mv.sh
@@ -509,7 +509,7 @@ test_expect_success 'moving nested submodules' '
 		touch nested_level1 &&
 		git init &&
 		git add . &&
-		git commit -m "nested level 1"
+		git commit -m "nested level 1" &&
 		git submodule add ../sub_nested_nested &&
 		git commit -m "add nested level 2"
 	) &&
diff --git a/t/t7105-reset-patch.sh b/t/t7105-reset-patch.sh
index 98b7d7b969..bd10a96727 100755
--- a/t/t7105-reset-patch.sh
+++ b/t/t7105-reset-patch.sh
@@ -19,20 +19,20 @@ test_expect_success PERL 'setup' '
 
 test_expect_success PERL 'saying "n" does nothing' '
 	set_and_save_state dir/foo work work &&
-	(echo n; echo n) | git reset -p &&
+	test_write_lines n n | git reset -p &&
 	verify_saved_state dir/foo &&
 	verify_saved_state bar
 '
 
 test_expect_success PERL 'git reset -p' '
-	(echo n; echo y) | git reset -p >output &&
+	test_write_lines n y | git reset -p >output &&
 	verify_state dir/foo work head &&
 	verify_saved_state bar &&
 	test_i18ngrep "Unstage" output
 '
 
 test_expect_success PERL 'git reset -p HEAD^' '
-	(echo n; echo y) | git reset -p HEAD^ >output &&
+	test_write_lines n y | git reset -p HEAD^ >output &&
 	verify_state dir/foo work parent &&
 	verify_saved_state bar &&
 	test_i18ngrep "Apply" output
@@ -45,20 +45,20 @@ test_expect_success PERL 'git reset -p HEAD^' '
 
 test_expect_success PERL 'git reset -p dir' '
 	set_state dir/foo work work &&
-	(echo y; echo n) | git reset -p dir &&
+	test_write_lines y n | git reset -p dir &&
 	verify_state dir/foo work head &&
 	verify_saved_state bar
 '
 
 test_expect_success PERL 'git reset -p -- foo (inside dir)' '
 	set_state dir/foo work work &&
-	(echo y; echo n) | (cd dir && git reset -p -- foo) &&
+	test_write_lines y n | (cd dir && git reset -p -- foo) &&
 	verify_state dir/foo work head &&
 	verify_saved_state bar
 '
 
 test_expect_success PERL 'git reset -p HEAD^ -- dir' '
-	(echo y; echo n) | git reset -p HEAD^ -- dir &&
+	test_write_lines y n | git reset -p HEAD^ -- dir &&
 	verify_state dir/foo work parent &&
 	verify_saved_state bar
 '
diff --git a/t/t7201-co.sh b/t/t7201-co.sh
index ab9da61da3..94cb039a03 100755
--- a/t/t7201-co.sh
+++ b/t/t7201-co.sh
@@ -528,10 +528,10 @@ test_expect_success 'checkout with --merge' '
 	cat sample >filf &&
 	git checkout -m -- fild file filf &&
 	(
-		echo "<<<<<<< ours"
-		echo ourside
-		echo "======="
-		echo theirside
+		echo "<<<<<<< ours" &&
+		echo ourside &&
+		echo "=======" &&
+		echo theirside &&
 		echo ">>>>>>> theirs"
 	) >merged &&
 	test_cmp expect fild &&
@@ -549,12 +549,12 @@ test_expect_success 'checkout with --merge, in diff3 -m style' '
 	cat sample >filf &&
 	git checkout -m -- fild file filf &&
 	(
-		echo "<<<<<<< ours"
-		echo ourside
-		echo "||||||| base"
-		echo original
-		echo "======="
-		echo theirside
+		echo "<<<<<<< ours" &&
+		echo ourside &&
+		echo "||||||| base" &&
+		echo original &&
+		echo "=======" &&
+		echo theirside &&
 		echo ">>>>>>> theirs"
 	) >merged &&
 	test_cmp expect fild &&
@@ -572,10 +572,10 @@ test_expect_success 'checkout --conflict=merge, overriding config' '
 	cat sample >filf &&
 	git checkout --conflict=merge -- fild file filf &&
 	(
-		echo "<<<<<<< ours"
-		echo ourside
-		echo "======="
-		echo theirside
+		echo "<<<<<<< ours" &&
+		echo ourside &&
+		echo "=======" &&
+		echo theirside &&
 		echo ">>>>>>> theirs"
 	) >merged &&
 	test_cmp expect fild &&
@@ -593,12 +593,12 @@ test_expect_success 'checkout --conflict=diff3' '
 	cat sample >filf &&
 	git checkout --conflict=diff3 -- fild file filf &&
 	(
-		echo "<<<<<<< ours"
-		echo ourside
-		echo "||||||| base"
-		echo original
-		echo "======="
-		echo theirside
+		echo "<<<<<<< ours" &&
+		echo ourside &&
+		echo "||||||| base" &&
+		echo original &&
+		echo "=======" &&
+		echo theirside &&
 		echo ">>>>>>> theirs"
 	) >merged &&
 	test_cmp expect fild &&
@@ -673,7 +673,6 @@ test_expect_success 'custom merge driver with checkout -m' '
 		do
 			grep $t arm || exit 1
 		done
-		exit 0
 	) &&
 
 	mv arm expect &&
diff --git a/t/t7301-clean-interactive.sh b/t/t7301-clean-interactive.sh
index 1bf9789c8a..a07e8b86de 100755
--- a/t/t7301-clean-interactive.sh
+++ b/t/t7301-clean-interactive.sh
@@ -107,7 +107,7 @@ test_expect_success 'git clean -id (filter all)' '
 	mkdir -p build docs &&
 	touch a.out src/part3.c src/part3.h src/part4.c src/part4.h \
 	docs/manual.txt obj.o build/lib.so &&
-	(echo f; echo "*"; echo; echo c) | \
+	test_write_lines f "*" "" c |
 	git clean -id &&
 	test -f Makefile &&
 	test -f README &&
@@ -129,7 +129,7 @@ test_expect_success 'git clean -id (filter patterns)' '
 	mkdir -p build docs &&
 	touch a.out src/part3.c src/part3.h src/part4.c src/part4.h \
 	docs/manual.txt obj.o build/lib.so &&
-	(echo f; echo "part3.* *.out"; echo; echo c) | \
+	test_write_lines f "part3.* *.out" "" c |
 	git clean -id &&
 	test -f Makefile &&
 	test -f README &&
@@ -151,7 +151,7 @@ test_expect_success 'git clean -id (filter patterns 2)' '
 	mkdir -p build docs &&
 	touch a.out src/part3.c src/part3.h src/part4.c src/part4.h \
 	docs/manual.txt obj.o build/lib.so &&
-	(echo f; echo "* !*.out"; echo; echo c) | \
+	test_write_lines f "* !*.out" "" c |
 	git clean -id &&
 	test -f Makefile &&
 	test -f README &&
@@ -173,7 +173,7 @@ test_expect_success 'git clean -id (select - all)' '
 	mkdir -p build docs &&
 	touch a.out src/part3.c src/part3.h src/part4.c src/part4.h \
 	docs/manual.txt obj.o build/lib.so &&
-	(echo s; echo "*"; echo; echo c) | \
+	test_write_lines s "*" "" c |
 	git clean -id &&
 	test -f Makefile &&
 	test -f README &&
@@ -195,7 +195,7 @@ test_expect_success 'git clean -id (select - none)' '
 	mkdir -p build docs &&
 	touch a.out src/part3.c src/part3.h src/part4.c src/part4.h \
 	docs/manual.txt obj.o build/lib.so &&
-	(echo s; echo; echo c) | \
+	test_write_lines s "" c |
 	git clean -id &&
 	test -f Makefile &&
 	test -f README &&
@@ -217,7 +217,7 @@ test_expect_success 'git clean -id (select - number)' '
 	mkdir -p build docs &&
 	touch a.out src/part3.c src/part3.h src/part4.c src/part4.h \
 	docs/manual.txt obj.o build/lib.so &&
-	(echo s; echo 3; echo; echo c) | \
+	test_write_lines s 3 "" c |
 	git clean -id &&
 	test -f Makefile &&
 	test -f README &&
@@ -239,7 +239,7 @@ test_expect_success 'git clean -id (select - number 2)' '
 	mkdir -p build docs &&
 	touch a.out src/part3.c src/part3.h src/part4.c src/part4.h \
 	docs/manual.txt obj.o build/lib.so &&
-	(echo s; echo 2 3; echo 5; echo; echo c) | \
+	test_write_lines s "2 3" 5 "" c |
 	git clean -id &&
 	test -f Makefile &&
 	test -f README &&
@@ -261,7 +261,7 @@ test_expect_success 'git clean -id (select - number 3)' '
 	mkdir -p build docs &&
 	touch a.out src/part3.c src/part3.h src/part4.c src/part4.h \
 	docs/manual.txt obj.o build/lib.so &&
-	(echo s; echo 3,4 5; echo; echo c) | \
+	test_write_lines s "3,4 5" "" c |
 	git clean -id &&
 	test -f Makefile &&
 	test -f README &&
@@ -282,7 +282,7 @@ test_expect_success 'git clean -id (select - filenames)' '
 
 	mkdir -p build docs &&
 	touch a.out foo.txt bar.txt baz.txt &&
-	(echo s; echo a.out fo ba bar; echo; echo c) | \
+	test_write_lines s "a.out fo ba bar" "" c |
 	git clean -id &&
 	test -f Makefile &&
 	test ! -f a.out &&
@@ -298,7 +298,7 @@ test_expect_success 'git clean -id (select - range)' '
 	mkdir -p build docs &&
 	touch a.out src/part3.c src/part3.h src/part4.c src/part4.h \
 	docs/manual.txt obj.o build/lib.so &&
-	(echo s; echo 1,3-4; echo 2; echo; echo c) | \
+	test_write_lines s "1,3-4" 2 "" c |
 	git clean -id &&
 	test -f Makefile &&
 	test -f README &&
@@ -320,7 +320,7 @@ test_expect_success 'git clean -id (select - range 2)' '
 	mkdir -p build docs &&
 	touch a.out src/part3.c src/part3.h src/part4.c src/part4.h \
 	docs/manual.txt obj.o build/lib.so &&
-	(echo s; echo 4- 1; echo; echo c) | \
+	test_write_lines s "4- 1" "" c |
 	git clean -id &&
 	test -f Makefile &&
 	test -f README &&
@@ -342,7 +342,7 @@ test_expect_success 'git clean -id (inverse select)' '
 	mkdir -p build docs &&
 	touch a.out src/part3.c src/part3.h src/part4.c src/part4.h \
 	docs/manual.txt obj.o build/lib.so &&
-	(echo s; echo "*"; echo -5- 1 -2; echo; echo c) | \
+	test_write_lines s "*" "-5- 1 -2" "" c |
 	git clean -id &&
 	test -f Makefile &&
 	test -f README &&
@@ -364,7 +364,7 @@ test_expect_success 'git clean -id (ask)' '
 	mkdir -p build docs &&
 	touch a.out src/part3.c src/part3.h src/part4.c src/part4.h \
 	docs/manual.txt obj.o build/lib.so &&
-	(echo a; echo Y; echo y; echo no; echo yes; echo bad; echo) | \
+	test_write_lines a Y y no yes bad "" |
 	git clean -id &&
 	test -f Makefile &&
 	test -f README &&
@@ -386,7 +386,7 @@ test_expect_success 'git clean -id (ask - Ctrl+D)' '
 	mkdir -p build docs &&
 	touch a.out src/part3.c src/part3.h src/part4.c src/part4.h \
 	docs/manual.txt obj.o build/lib.so &&
-	(echo a; echo Y; echo no; echo yes; echo "\04") | \
+	test_write_lines a Y no yes "\04" |
 	git clean -id &&
 	test -f Makefile &&
 	test -f README &&
@@ -408,8 +408,8 @@ test_expect_success 'git clean -id with prefix and path (filter)' '
 	mkdir -p build docs &&
 	touch a.out src/part3.c src/part3.h src/part4.c src/part4.h \
 	docs/manual.txt obj.o build/lib.so &&
-	(cd build/ && \
-	 (echo f; echo "docs"; echo "*.h"; echo ; echo c) | \
+	(cd build/ &&
+	 test_write_lines f docs "*.h" "" c |
 	 git clean -id ..) &&
 	test -f Makefile &&
 	test -f README &&
@@ -431,9 +431,8 @@ test_expect_success 'git clean -id with prefix and path (select by name)' '
 	mkdir -p build docs &&
 	touch a.out src/part3.c src/part3.h src/part4.c src/part4.h \
 	docs/manual.txt obj.o build/lib.so &&
-	(cd build/ && \
-	 (echo s; echo "../docs/"; echo "../src/part3.c"; \
-	  echo "../src/part4.c";  echo; echo c) | \
+	(cd build/ &&
+	 test_write_lines s ../docs/ ../src/part3.c ../src/part4.c "" c |
 	 git clean -id ..) &&
 	test -f Makefile &&
 	test -f README &&
@@ -455,8 +454,8 @@ test_expect_success 'git clean -id with prefix and path (ask)' '
 	mkdir -p build docs &&
 	touch a.out src/part3.c src/part3.h src/part4.c src/part4.h \
 	docs/manual.txt obj.o build/lib.so &&
-	(cd build/ && \
-	 (echo a; echo Y; echo y; echo no; echo yes; echo bad; echo) | \
+	(cd build/ &&
+	 test_write_lines a Y y no yes bad "" |
 	 git clean -id ..) &&
 	test -f Makefile &&
 	test -f README &&
diff --git a/t/t7400-submodule-basic.sh b/t/t7400-submodule-basic.sh
index 48fd14fae6..2c2c97e144 100755
--- a/t/t7400-submodule-basic.sh
+++ b/t/t7400-submodule-basic.sh
@@ -171,12 +171,13 @@ test_expect_success 'submodule add to .gitignored path with --force' '
 test_expect_success 'submodule add to reconfigure existing submodule with --force' '
 	(
 		cd addtest-ignore &&
-		git submodule add --force bogus-url submod &&
-		git submodule add -b initial "$submodurl" submod-branch &&
-		test "bogus-url" = "$(git config -f .gitmodules submodule.submod.url)" &&
-		test "bogus-url" = "$(git config submodule.submod.url)" &&
+		bogus_url="$(pwd)/bogus-url" &&
+		git submodule add --force "$bogus_url" submod &&
+		git submodule add --force -b initial "$submodurl" submod-branch &&
+		test "$bogus_url" = "$(git config -f .gitmodules submodule.submod.url)" &&
+		test "$bogus_url" = "$(git config submodule.submod.url)" &&
 		# Restore the url
-		git submodule add --force "$submodurl" submod
+		git submodule add --force "$submodurl" submod &&
 		test "$submodurl" = "$(git config -f .gitmodules submodule.submod.url)" &&
 		test "$submodurl" = "$(git config submodule.submod.url)"
 	)
@@ -818,7 +819,7 @@ test_expect_success '../bar/a/b/c works with relative local path - ../foo/bar.gi
 		cp pristine-.git-config .git/config &&
 		cp pristine-.gitmodules .gitmodules &&
 		mkdir -p a/b/c &&
-		(cd a/b/c; git init) &&
+		(cd a/b/c && git init) &&
 		git config remote.origin.url ../foo/bar.git &&
 		git submodule add ../bar/a/b/c ./a/b/c &&
 		git submodule init &&
diff --git a/t/t7406-submodule-update.sh b/t/t7406-submodule-update.sh
index 9e0d31700e..f604ef7a72 100755
--- a/t/t7406-submodule-update.sh
+++ b/t/t7406-submodule-update.sh
@@ -865,9 +865,9 @@ test_expect_success 'submodule update places git-dir in superprojects git-dir re
 	 (cd submodule/subsubmodule &&
 	  git log > ../../expected
 	 ) &&
-	 (cd .git/modules/submodule/modules/subsubmodule
+	 (cd .git/modules/submodule/modules/subsubmodule &&
 	  git log > ../../../../../actual
-	 )
+	 ) &&
 	 test_cmp actual expected
 	)
 '
@@ -886,7 +886,7 @@ test_expect_success 'submodule update properly revives a moved submodule' '
 	 git commit -am "pre move" &&
 	 H2=$(git rev-parse --short HEAD) &&
 	 git status | sed "s/$H/XXX/" >expect &&
-	 H=$(cd submodule2; git rev-parse HEAD) &&
+	 H=$(cd submodule2 && git rev-parse HEAD) &&
 	 git rm --cached submodule2 &&
 	 rm -rf submodule2 &&
 	 mkdir -p "moved/sub module" &&
diff --git a/t/t7408-submodule-reference.sh b/t/t7408-submodule-reference.sh
index 08d9add05e..34ac28c056 100755
--- a/t/t7408-submodule-reference.sh
+++ b/t/t7408-submodule-reference.sh
@@ -148,7 +148,7 @@ test_expect_success 'preparing second superproject with a nested submodule plus
 		cd supersuper &&
 		echo "I am super super." >file &&
 		git add file &&
-		git commit -m B-super-super-initial
+		git commit -m B-super-super-initial &&
 		git submodule add "file://$base_dir/super" subwithsub &&
 		git commit -m B-super-super-added &&
 		git submodule update --init --recursive &&
diff --git a/t/t7501-commit.sh b/t/t7501-commit.sh
index 9dbbd01fc0..51646d8019 100755
--- a/t/t7501-commit.sh
+++ b/t/t7501-commit.sh
@@ -47,7 +47,7 @@ test_expect_success 'paths and -a do not mix' '
 test_expect_success PERL 'can use paths with --interactive' '
 	echo bong-o-bong >file &&
 	# 2: update, 1:st path, that is all, 7: quit
-	( echo 2; echo 1; echo; echo 7 ) |
+	test_write_lines 2 1 "" 7 |
 	git commit -m foo --interactive file &&
 	git reset --hard HEAD^
 '
@@ -293,7 +293,7 @@ test_expect_success PERL 'interactive add' '
 test_expect_success PERL "commit --interactive doesn't change index if editor aborts" '
 	echo zoo >file &&
 	test_must_fail git diff --exit-code >diff1 &&
-	(echo u ; echo "*" ; echo q) |
+	test_write_lines u "*" q |
 	(
 		EDITOR=: &&
 		export EDITOR &&
@@ -411,8 +411,8 @@ test_expect_success 'sign off (1)' '
 	git commit -s -m "thank you" &&
 	git cat-file commit HEAD | sed -e "1,/^\$/d" >actual &&
 	(
-		echo thank you
-		echo
+		echo thank you &&
+		echo &&
 		git var GIT_COMMITTER_IDENT |
 		sed -e "s/>.*/>/" -e "s/^/Signed-off-by: /"
 	) >expected &&
@@ -430,9 +430,9 @@ test_expect_success 'sign off (2)' '
 $existing" &&
 	git cat-file commit HEAD | sed -e "1,/^\$/d" >actual &&
 	(
-		echo thank you
-		echo
-		echo $existing
+		echo thank you &&
+		echo &&
+		echo $existing &&
 		git var GIT_COMMITTER_IDENT |
 		sed -e "s/>.*/>/" -e "s/^/Signed-off-by: /"
 	) >expected &&
@@ -450,9 +450,9 @@ test_expect_success 'signoff gap' '
 $alt" &&
 	git cat-file commit HEAD | sed -e "1,/^\$/d" > actual &&
 	(
-		echo welcome
-		echo
-		echo $alt
+		echo welcome &&
+		echo &&
+		echo $alt &&
 		git var GIT_COMMITTER_IDENT |
 		sed -e "s/>.*/>/" -e "s/^/Signed-off-by: /"
 	) >expected &&
@@ -470,11 +470,11 @@ We have now
 $alt" &&
 	git cat-file commit HEAD | sed -e "1,/^\$/d" > actual &&
 	(
-		echo welcome
-		echo
-		echo We have now
-		echo $alt
-		echo
+		echo welcome &&
+		echo &&
+		echo We have now &&
+		echo $alt &&
+		echo &&
 		git var GIT_COMMITTER_IDENT |
 		sed -e "s/>.*/>/" -e "s/^/Signed-off-by: /"
 	) >expected &&
@@ -491,11 +491,11 @@ non-trailer line
 Myfooter: x" &&
 	git cat-file commit HEAD | sed -e "1,/^\$/d" > actual &&
 	(
-		echo subject
-		echo
-		echo non-trailer line
-		echo Myfooter: x
-		echo
+		echo subject &&
+		echo &&
+		echo non-trailer line &&
+		echo Myfooter: x &&
+		echo &&
 		echo "Signed-off-by: $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL>"
 	) >expected &&
 	test_cmp expected actual &&
@@ -508,10 +508,10 @@ non-trailer line
 Myfooter: x" &&
 	git cat-file commit HEAD | sed -e "1,/^\$/d" > actual &&
 	(
-		echo subject
-		echo
-		echo non-trailer line
-		echo Myfooter: x
+		echo subject &&
+		echo &&
+		echo non-trailer line &&
+		echo Myfooter: x &&
 		echo "Signed-off-by: $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL>"
 	) >expected &&
 	test_cmp expected actual
@@ -524,10 +524,10 @@ test_expect_success 'multiple -m' '
 	git commit -m "one" -m "two" -m "three" &&
 	git cat-file commit HEAD | sed -e "1,/^\$/d" >actual &&
 	(
-		echo one
-		echo
-		echo two
-		echo
+		echo one &&
+		echo &&
+		echo two &&
+		echo &&
 		echo three
 	) >expected &&
 	test_cmp expected actual
diff --git a/t/t7506-status-submodule.sh b/t/t7506-status-submodule.sh
index b4b74dbe29..943708fb04 100755
--- a/t/t7506-status-submodule.sh
+++ b/t/t7506-status-submodule.sh
@@ -193,9 +193,9 @@ test_expect_success 'status with added and untracked file in modified submodule
 
 test_expect_success 'setup .git file for sub' '
 	(cd sub &&
-	 rm -f new-file
+	 rm -f new-file &&
 	 REAL="$(pwd)/../.real" &&
-	 mv .git "$REAL"
+	 mv .git "$REAL" &&
 	 echo "gitdir: $REAL" >.git) &&
 	 echo .real >>.gitignore &&
 	 git commit -m "added .real to .gitignore" .gitignore
@@ -209,12 +209,12 @@ test_expect_success 'status with added file in modified submodule with .git file
 
 test_expect_success 'status with a lot of untracked files in the submodule' '
 	(
-		cd sub
+		cd sub &&
 		i=0 &&
 		while test $i -lt 1024
 		do
-			>some-file-$i
-			i=$(( $i + 1 ))
+			>some-file-$i &&
+			i=$(( $i + 1 )) || exit 1
 		done
 	) &&
 	git status --porcelain sub 2>err.actual &&
diff --git a/t/t7610-mergetool.sh b/t/t7610-mergetool.sh
index 1a430b9c40..047156e9d5 100755
--- a/t/t7610-mergetool.sh
+++ b/t/t7610-mergetool.sh
@@ -57,18 +57,18 @@ test_expect_success 'setup' '
 
 	git checkout -b delete-base branch1 &&
 	mkdir -p a/a &&
-	(echo one; echo two; echo 3; echo 4) >a/a/file.txt &&
+	test_write_lines one two 3 4 >a/a/file.txt &&
 	git add a/a/file.txt &&
 	git commit -m"base file" &&
 	git checkout -b move-to-b delete-base &&
 	mkdir -p b/b &&
 	git mv a/a/file.txt b/b/file.txt &&
-	(echo one; echo two; echo 4) >b/b/file.txt &&
+	test_write_lines one two 4 >b/b/file.txt &&
 	git commit -a -m"move to b" &&
 	git checkout -b move-to-c delete-base &&
 	mkdir -p c/c &&
 	git mv a/a/file.txt c/c/file.txt &&
-	(echo one; echo two; echo 3) >c/c/file.txt &&
+	test_write_lines one two 3 >c/c/file.txt &&
 	git commit -a -m"move to c" &&
 
 	git checkout -b stash1 master &&
@@ -349,7 +349,7 @@ test_expect_success 'mergetool keeps tempfiles when aborting delete/delete' '
 	git checkout -b test$test_count move-to-c &&
 	test_config mergetool.keepTemporaries true &&
 	test_must_fail git merge move-to-b &&
-	! (echo a; echo n) | git mergetool a/a/file.txt &&
+	! test_write_lines a n | git mergetool a/a/file.txt &&
 	test -d a/a &&
 	cat >expect <<-\EOF &&
 	file_BASE_.txt
diff --git a/t/t7810-grep.sh b/t/t7810-grep.sh
index 9312c8daf5..90bba4fcef 100755
--- a/t/t7810-grep.sh
+++ b/t/t7810-grep.sh
@@ -940,10 +940,9 @@ test_expect_success 'grep from a subdirectory to search wider area (1)' '
 test_expect_success 'grep from a subdirectory to search wider area (2)' '
 	mkdir -p s &&
 	(
-		cd s || exit 1
-		( git grep xxyyzz .. >out ; echo $? >status )
-		! test -s out &&
-		test 1 = $(cat status)
+		cd s &&
+		test_expect_code 1 git grep xxyyzz .. >out &&
+		! test -s out
 	)
 '
 
diff --git a/t/t9001-send-email.sh b/t/t9001-send-email.sh
index 1da282c415..b8e919e25d 100755
--- a/t/t9001-send-email.sh
+++ b/t/t9001-send-email.sh
@@ -332,7 +332,7 @@ test_expect_success $PREREQ 'Show all headers' '
 
 test_expect_success $PREREQ 'Prompting works' '
 	clean_fake_sendmail &&
-	(echo "to@example.com"
+	(echo "to@example.com" &&
 	 echo ""
 	) | GIT_SEND_EMAIL_NOTTY=1 git send-email \
 		--smtp-server="$(pwd)/fake.sendmail" \
@@ -509,8 +509,8 @@ test_expect_success $PREREQ 'Invalid In-Reply-To' '
 
 test_expect_success $PREREQ 'Valid In-Reply-To when prompting' '
 	clean_fake_sendmail &&
-	(echo "From Example <from@example.com>"
-	 echo "To Example <to@example.com>"
+	(echo "From Example <from@example.com>" &&
+	 echo "To Example <to@example.com>" &&
 	 echo ""
 	) | GIT_SEND_EMAIL_NOTTY=1 git send-email \
 		--smtp-server="$(pwd)/fake.sendmail" \
@@ -2023,11 +2023,11 @@ test_expect_success $PREREQ 'invoke hook' '
 
 		# Verify error message when a patch is rejected by the hook
 		sed -e "s/add master/x/" ../0001-add-master.patch >../another.patch &&
-		git send-email \
+		test_must_fail git send-email \
 			--from="Example <nobody@example.com>" \
 			--to=nobody@example.com \
 			--smtp-server="$(pwd)/../fake.sendmail" \
-			../another.patch 2>err
+			../another.patch 2>err &&
 		test_i18ngrep "rejected by sendemail-validate hook" err
 	)
 '
diff --git a/t/t9100-git-svn-basic.sh b/t/t9100-git-svn-basic.sh
index c937330a5f..9af6078844 100755
--- a/t/t9100-git-svn-basic.sh
+++ b/t/t9100-git-svn-basic.sh
@@ -31,7 +31,7 @@ test_expect_success \
 	(
 		cd import &&
 		echo foo >foo &&
-		ln -s foo foo.link
+		ln -s foo foo.link &&
 		mkdir -p dir/a/b/c/d/e &&
 		echo "deep dir" >dir/a/b/c/d/e/file &&
 		mkdir bar &&
diff --git a/t/t9101-git-svn-props.sh b/t/t9101-git-svn-props.sh
index 07bfb63777..8a5c8dc1aa 100755
--- a/t/t9101-git-svn-props.sh
+++ b/t/t9101-git-svn-props.sh
@@ -149,7 +149,7 @@ test_expect_success 'test show-ignore' "
 		svn_cmd up &&
 		svn_cmd propset -R svn:ignore '
 no-such-file*
-' .
+' . &&
 		svn_cmd commit -m 'propset svn:ignore'
 	) &&
 	git svn show-ignore > show-ignore.got &&
diff --git a/t/t9119-git-svn-info.sh b/t/t9119-git-svn-info.sh
index 88241baee3..8201c3e808 100755
--- a/t/t9119-git-svn-info.sh
+++ b/t/t9119-git-svn-info.sh
@@ -22,8 +22,8 @@ esac
 # same value as "svn info" (i.e. the commit timestamp that touched the
 # path most recently); do not expect that field to match.
 test_cmp_info () {
-	sed -e '/^Text Last Updated:/d' "$1" >tmp.expect
-	sed -e '/^Text Last Updated:/d' "$2" >tmp.actual
+	sed -e '/^Text Last Updated:/d' "$1" >tmp.expect &&
+	sed -e '/^Text Last Updated:/d' "$2" >tmp.actual &&
 	test_cmp tmp.expect tmp.actual &&
 	rm -f tmp.expect tmp.actual
 }
@@ -59,24 +59,24 @@ test_expect_success 'setup repository and import' '
 	'
 
 test_expect_success 'info' "
-	(cd svnwc; svn info) > expected.info &&
-	(cd gitwc; git svn info) > actual.info &&
+	(cd svnwc && svn info) > expected.info &&
+	(cd gitwc && git svn info) > actual.info &&
 	test_cmp_info expected.info actual.info
 	"
 
 test_expect_success 'info --url' '
-	test "$(cd gitwc; git svn info --url)" = "$quoted_svnrepo"
+	test "$(cd gitwc && git svn info --url)" = "$quoted_svnrepo"
 	'
 
 test_expect_success 'info .' "
-	(cd svnwc; svn info .) > expected.info-dot &&
-	(cd gitwc; git svn info .) > actual.info-dot &&
+	(cd svnwc && svn info .) > expected.info-dot &&
+	(cd gitwc && git svn info .) > actual.info-dot &&
 	test_cmp_info expected.info-dot actual.info-dot
 	"
 
 test_expect_success 'info $(pwd)' '
-	(cd svnwc; svn info "$(pwd)") >expected.info-pwd &&
-	(cd gitwc; git svn info "$(pwd)") >actual.info-pwd &&
+	(cd svnwc && svn info "$(pwd)") >expected.info-pwd &&
+	(cd gitwc && git svn info "$(pwd)") >actual.info-pwd &&
 	grep -v ^Path: <expected.info-pwd >expected.info-np &&
 	grep -v ^Path: <actual.info-pwd >actual.info-np &&
 	test_cmp_info expected.info-np actual.info-np &&
@@ -85,8 +85,8 @@ test_expect_success 'info $(pwd)' '
 	'
 
 test_expect_success 'info $(pwd)/../___wc' '
-	(cd svnwc; svn info "$(pwd)/../svnwc") >expected.info-pwd &&
-	(cd gitwc; git svn info "$(pwd)/../gitwc") >actual.info-pwd &&
+	(cd svnwc && svn info "$(pwd)/../svnwc") >expected.info-pwd &&
+	(cd gitwc && git svn info "$(pwd)/../gitwc") >actual.info-pwd &&
 	grep -v ^Path: <expected.info-pwd >expected.info-np &&
 	grep -v ^Path: <actual.info-pwd >actual.info-np &&
 	test_cmp_info expected.info-np actual.info-np &&
@@ -95,8 +95,8 @@ test_expect_success 'info $(pwd)/../___wc' '
 	'
 
 test_expect_success 'info $(pwd)/../___wc//file' '
-	(cd svnwc; svn info "$(pwd)/../svnwc//file") >expected.info-pwd &&
-	(cd gitwc; git svn info "$(pwd)/../gitwc//file") >actual.info-pwd &&
+	(cd svnwc && svn info "$(pwd)/../svnwc//file") >expected.info-pwd &&
+	(cd gitwc && git svn info "$(pwd)/../gitwc//file") >actual.info-pwd &&
 	grep -v ^Path: <expected.info-pwd >expected.info-np &&
 	grep -v ^Path: <actual.info-pwd >actual.info-np &&
 	test_cmp_info expected.info-np actual.info-np &&
@@ -105,56 +105,56 @@ test_expect_success 'info $(pwd)/../___wc//file' '
 	'
 
 test_expect_success 'info --url .' '
-	test "$(cd gitwc; git svn info --url .)" = "$quoted_svnrepo"
+	test "$(cd gitwc && git svn info --url .)" = "$quoted_svnrepo"
 	'
 
 test_expect_success 'info file' "
-	(cd svnwc; svn info file) > expected.info-file &&
-	(cd gitwc; git svn info file) > actual.info-file &&
+	(cd svnwc && svn info file) > expected.info-file &&
+	(cd gitwc && git svn info file) > actual.info-file &&
 	test_cmp_info expected.info-file actual.info-file
 	"
 
 test_expect_success 'info --url file' '
-	test "$(cd gitwc; git svn info --url file)" = "$quoted_svnrepo/file"
+	test "$(cd gitwc && git svn info --url file)" = "$quoted_svnrepo/file"
 	'
 
 test_expect_success 'info directory' "
-	(cd svnwc; svn info directory) > expected.info-directory &&
-	(cd gitwc; git svn info directory) > actual.info-directory &&
+	(cd svnwc && svn info directory) > expected.info-directory &&
+	(cd gitwc && git svn info directory) > actual.info-directory &&
 	test_cmp_info expected.info-directory actual.info-directory
 	"
 
 test_expect_success 'info inside directory' "
-	(cd svnwc/directory; svn info) > expected.info-inside-directory &&
-	(cd gitwc/directory; git svn info) > actual.info-inside-directory &&
+	(cd svnwc/directory && svn info) > expected.info-inside-directory &&
+	(cd gitwc/directory && git svn info) > actual.info-inside-directory &&
 	test_cmp_info expected.info-inside-directory actual.info-inside-directory
 	"
 
 test_expect_success 'info --url directory' '
-	test "$(cd gitwc; git svn info --url directory)" = "$quoted_svnrepo/directory"
+	test "$(cd gitwc && git svn info --url directory)" = "$quoted_svnrepo/directory"
 	'
 
 test_expect_success 'info symlink-file' "
-	(cd svnwc; svn info symlink-file) > expected.info-symlink-file &&
-	(cd gitwc; git svn info symlink-file) > actual.info-symlink-file &&
+	(cd svnwc && svn info symlink-file) > expected.info-symlink-file &&
+	(cd gitwc && git svn info symlink-file) > actual.info-symlink-file &&
 	test_cmp_info expected.info-symlink-file actual.info-symlink-file
 	"
 
 test_expect_success 'info --url symlink-file' '
-	test "$(cd gitwc; git svn info --url symlink-file)" \
+	test "$(cd gitwc && git svn info --url symlink-file)" \
 	     = "$quoted_svnrepo/symlink-file"
 	'
 
 test_expect_success 'info symlink-directory' "
-	(cd svnwc; svn info symlink-directory) \
+	(cd svnwc && svn info symlink-directory) \
 		> expected.info-symlink-directory &&
-	(cd gitwc; git svn info symlink-directory) \
+	(cd gitwc && git svn info symlink-directory) \
 		> actual.info-symlink-directory &&
 	test_cmp_info expected.info-symlink-directory actual.info-symlink-directory
 	"
 
 test_expect_success 'info --url symlink-directory' '
-	test "$(cd gitwc; git svn info --url symlink-directory)" \
+	test "$(cd gitwc && git svn info --url symlink-directory)" \
 	     = "$quoted_svnrepo/symlink-directory"
 	'
 
@@ -169,13 +169,13 @@ test_expect_success 'info added-file' "
 		cd svnwc &&
 		svn_cmd add added-file > /dev/null
 	) &&
-	(cd svnwc; svn info added-file) > expected.info-added-file &&
-	(cd gitwc; git svn info added-file) > actual.info-added-file &&
+	(cd svnwc && svn info added-file) > expected.info-added-file &&
+	(cd gitwc && git svn info added-file) > actual.info-added-file &&
 	test_cmp_info expected.info-added-file actual.info-added-file
 	"
 
 test_expect_success 'info --url added-file' '
-	test "$(cd gitwc; git svn info --url added-file)" \
+	test "$(cd gitwc && git svn info --url added-file)" \
 	     = "$quoted_svnrepo/added-file"
 	'
 
@@ -190,15 +190,15 @@ test_expect_success 'info added-directory' "
 		cd gitwc &&
 		git add added-directory
 	) &&
-	(cd svnwc; svn info added-directory) \
+	(cd svnwc && svn info added-directory) \
 		> expected.info-added-directory &&
-	(cd gitwc; git svn info added-directory) \
+	(cd gitwc && git svn info added-directory) \
 		> actual.info-added-directory &&
 	test_cmp_info expected.info-added-directory actual.info-added-directory
 	"
 
 test_expect_success 'info --url added-directory' '
-	test "$(cd gitwc; git svn info --url added-directory)" \
+	test "$(cd gitwc && git svn info --url added-directory)" \
 	     = "$quoted_svnrepo/added-directory"
 	'
 
@@ -213,16 +213,16 @@ test_expect_success 'info added-symlink-file' "
 		ln -s added-file added-symlink-file &&
 		svn_cmd add added-symlink-file > /dev/null
 	) &&
-	(cd svnwc; svn info added-symlink-file) \
+	(cd svnwc && svn info added-symlink-file) \
 		> expected.info-added-symlink-file &&
-	(cd gitwc; git svn info added-symlink-file) \
+	(cd gitwc && git svn info added-symlink-file) \
 		> actual.info-added-symlink-file &&
 	test_cmp_info expected.info-added-symlink-file \
 		actual.info-added-symlink-file
 	"
 
 test_expect_success 'info --url added-symlink-file' '
-	test "$(cd gitwc; git svn info --url added-symlink-file)" \
+	test "$(cd gitwc && git svn info --url added-symlink-file)" \
 	     = "$quoted_svnrepo/added-symlink-file"
 	'
 
@@ -237,16 +237,16 @@ test_expect_success 'info added-symlink-directory' "
 		ln -s added-directory added-symlink-directory &&
 		svn_cmd add added-symlink-directory > /dev/null
 	) &&
-	(cd svnwc; svn info added-symlink-directory) \
+	(cd svnwc && svn info added-symlink-directory) \
 		> expected.info-added-symlink-directory &&
-	(cd gitwc; git svn info added-symlink-directory) \
+	(cd gitwc && git svn info added-symlink-directory) \
 		> actual.info-added-symlink-directory &&
 	test_cmp_info expected.info-added-symlink-directory \
 		actual.info-added-symlink-directory
 	"
 
 test_expect_success 'info --url added-symlink-directory' '
-	test "$(cd gitwc; git svn info --url added-symlink-directory)" \
+	test "$(cd gitwc && git svn info --url added-symlink-directory)" \
 	     = "$quoted_svnrepo/added-symlink-directory"
 	'
 
@@ -259,13 +259,13 @@ test_expect_success 'info deleted-file' "
 		cd svnwc &&
 		svn_cmd rm --force file > /dev/null
 	) &&
-	(cd svnwc; svn info file) >expected.info-deleted-file &&
-	(cd gitwc; git svn info file) >actual.info-deleted-file &&
+	(cd svnwc && svn info file) >expected.info-deleted-file &&
+	(cd gitwc && git svn info file) >actual.info-deleted-file &&
 	test_cmp_info expected.info-deleted-file actual.info-deleted-file
 	"
 
 test_expect_success 'info --url file (deleted)' '
-	test "$(cd gitwc; git svn info --url file)" \
+	test "$(cd gitwc && git svn info --url file)" \
 	     = "$quoted_svnrepo/file"
 	'
 
@@ -278,13 +278,13 @@ test_expect_success 'info deleted-directory' "
 		cd svnwc &&
 		svn_cmd rm --force directory > /dev/null
 	) &&
-	(cd svnwc; svn info directory) >expected.info-deleted-directory &&
-	(cd gitwc; git svn info directory) >actual.info-deleted-directory &&
+	(cd svnwc && svn info directory) >expected.info-deleted-directory &&
+	(cd gitwc && git svn info directory) >actual.info-deleted-directory &&
 	test_cmp_info expected.info-deleted-directory actual.info-deleted-directory
 	"
 
 test_expect_success 'info --url directory (deleted)' '
-	test "$(cd gitwc; git svn info --url directory)" \
+	test "$(cd gitwc && git svn info --url directory)" \
 	     = "$quoted_svnrepo/directory"
 	'
 
@@ -297,13 +297,13 @@ test_expect_success 'info deleted-symlink-file' "
 		cd svnwc &&
 		svn_cmd rm --force symlink-file > /dev/null
 	) &&
-	(cd svnwc; svn info symlink-file) >expected.info-deleted-symlink-file &&
-	(cd gitwc; git svn info symlink-file) >actual.info-deleted-symlink-file &&
+	(cd svnwc && svn info symlink-file) >expected.info-deleted-symlink-file &&
+	(cd gitwc && git svn info symlink-file) >actual.info-deleted-symlink-file &&
 	test_cmp_info expected.info-deleted-symlink-file actual.info-deleted-symlink-file
 	"
 
 test_expect_success 'info --url symlink-file (deleted)' '
-	test "$(cd gitwc; git svn info --url symlink-file)" \
+	test "$(cd gitwc && git svn info --url symlink-file)" \
 	     = "$quoted_svnrepo/symlink-file"
 	'
 
@@ -316,13 +316,13 @@ test_expect_success 'info deleted-symlink-directory' "
 		cd svnwc &&
 		svn_cmd rm --force symlink-directory > /dev/null
 	) &&
-	(cd svnwc; svn info symlink-directory) >expected.info-deleted-symlink-directory &&
-	(cd gitwc; git svn info symlink-directory) >actual.info-deleted-symlink-directory &&
+	(cd svnwc && svn info symlink-directory) >expected.info-deleted-symlink-directory &&
+	(cd gitwc && git svn info symlink-directory) >actual.info-deleted-symlink-directory &&
 	test_cmp_info expected.info-deleted-symlink-directory actual.info-deleted-symlink-directory
 	"
 
 test_expect_success 'info --url symlink-directory (deleted)' '
-	test "$(cd gitwc; git svn info --url symlink-directory)" \
+	test "$(cd gitwc && git svn info --url symlink-directory)" \
 	     = "$quoted_svnrepo/symlink-directory"
 	'
 
@@ -331,27 +331,27 @@ test_expect_success 'info --url symlink-directory (deleted)' '
 
 test_expect_success 'info unknown-file' "
 	echo two > gitwc/unknown-file &&
-	(cd gitwc; test_must_fail git svn info unknown-file) \
+	(cd gitwc && test_must_fail git svn info unknown-file) \
 		 2> actual.info-unknown-file &&
 	grep unknown-file actual.info-unknown-file
 	"
 
 test_expect_success 'info --url unknown-file' '
 	echo two > gitwc/unknown-file &&
-	(cd gitwc; test_must_fail git svn info --url unknown-file) \
+	(cd gitwc && test_must_fail git svn info --url unknown-file) \
 		 2> actual.info-url-unknown-file &&
 	grep unknown-file actual.info-url-unknown-file
 	'
 
 test_expect_success 'info unknown-directory' "
 	mkdir gitwc/unknown-directory svnwc/unknown-directory &&
-	(cd gitwc; test_must_fail git svn info unknown-directory) \
+	(cd gitwc && test_must_fail git svn info unknown-directory) \
 		 2> actual.info-unknown-directory &&
 	grep unknown-directory actual.info-unknown-directory
 	"
 
 test_expect_success 'info --url unknown-directory' '
-	(cd gitwc; test_must_fail git svn info --url unknown-directory) \
+	(cd gitwc && test_must_fail git svn info --url unknown-directory) \
 		 2> actual.info-url-unknown-directory &&
 	grep unknown-directory actual.info-url-unknown-directory
 	'
@@ -361,13 +361,13 @@ test_expect_success 'info unknown-symlink-file' "
 		cd gitwc &&
 		ln -s unknown-file unknown-symlink-file
 	) &&
-	(cd gitwc; test_must_fail git svn info unknown-symlink-file) \
+	(cd gitwc && test_must_fail git svn info unknown-symlink-file) \
 		 2> actual.info-unknown-symlink-file &&
 	grep unknown-symlink-file actual.info-unknown-symlink-file
 	"
 
 test_expect_success 'info --url unknown-symlink-file' '
-	(cd gitwc; test_must_fail git svn info --url unknown-symlink-file) \
+	(cd gitwc && test_must_fail git svn info --url unknown-symlink-file) \
 		 2> actual.info-url-unknown-symlink-file &&
 	grep unknown-symlink-file actual.info-url-unknown-symlink-file
 	'
@@ -377,13 +377,13 @@ test_expect_success 'info unknown-symlink-directory' "
 		cd gitwc &&
 		ln -s unknown-directory unknown-symlink-directory
 	) &&
-	(cd gitwc; test_must_fail git svn info unknown-symlink-directory) \
+	(cd gitwc && test_must_fail git svn info unknown-symlink-directory) \
 		 2> actual.info-unknown-symlink-directory &&
 	grep unknown-symlink-directory actual.info-unknown-symlink-directory
 	"
 
 test_expect_success 'info --url unknown-symlink-directory' '
-	(cd gitwc; test_must_fail git svn info --url unknown-symlink-directory) \
+	(cd gitwc && test_must_fail git svn info --url unknown-symlink-directory) \
 		 2> actual.info-url-unknown-symlink-directory &&
 	grep unknown-symlink-directory actual.info-url-unknown-symlink-directory
 	'
diff --git a/t/t9122-git-svn-author.sh b/t/t9122-git-svn-author.sh
index 30013b7bb9..9e8fe38e7e 100755
--- a/t/t9122-git-svn-author.sh
+++ b/t/t9122-git-svn-author.sh
@@ -7,8 +7,8 @@ test_expect_success 'setup svn repository' '
 	svn_cmd checkout "$svnrepo" work.svn &&
 	(
 		cd work.svn &&
-		echo >file
-		svn_cmd add file
+		echo >file &&
+		svn_cmd add file &&
 		svn_cmd commit -m "first commit" file
 	)
 '
@@ -17,7 +17,7 @@ test_expect_success 'interact with it via git svn' '
 	mkdir work.git &&
 	(
 		cd work.git &&
-		git svn init "$svnrepo"
+		git svn init "$svnrepo" &&
 		git svn fetch &&
 
 		echo modification >file &&
diff --git a/t/t9129-git-svn-i18n-commitencoding.sh b/t/t9129-git-svn-i18n-commitencoding.sh
index 8dbd6476fa..2c213ae654 100755
--- a/t/t9129-git-svn-i18n-commitencoding.sh
+++ b/t/t9129-git-svn-i18n-commitencoding.sh
@@ -51,7 +51,7 @@ do
 		git add F &&
 		git commit -a -F "$TEST_DIRECTORY"/t3900/$H.txt &&
 		E=$(git cat-file commit HEAD | sed -ne "s/^encoding //p") &&
-		test "z$E" = "z$H"
+		test "z$E" = "z$H" &&
 		compare_git_head_with "$TEST_DIRECTORY"/t3900/$H.txt
 	)
 	'
diff --git a/t/t9130-git-svn-authors-file.sh b/t/t9130-git-svn-authors-file.sh
index d8262854bb..cb764bcadc 100755
--- a/t/t9130-git-svn-authors-file.sh
+++ b/t/t9130-git-svn-authors-file.sh
@@ -25,7 +25,7 @@ test_expect_success 'start import with incomplete authors file' '
 
 test_expect_success 'imported 2 revisions successfully' '
 	(
-		cd x
+		cd x &&
 		git rev-list refs/remotes/git-svn >actual &&
 		test_line_count = 2 actual &&
 		git rev-list -1 --pretty=raw refs/remotes/git-svn >actual &&
@@ -42,7 +42,7 @@ EOF
 
 test_expect_success 'continues to import once authors have been added' '
 	(
-		cd x
+		cd x &&
 		git svn fetch --authors-file=../svn-authors &&
 		git rev-list refs/remotes/git-svn >actual &&
 		test_line_count = 4 actual &&
diff --git a/t/t9134-git-svn-ignore-paths.sh b/t/t9134-git-svn-ignore-paths.sh
index 09ff10cd9b..fff49c4100 100755
--- a/t/t9134-git-svn-ignore-paths.sh
+++ b/t/t9134-git-svn-ignore-paths.sh
@@ -82,7 +82,7 @@ test_expect_success 'update git svn-cloned repo (option ignore)' '
 test_expect_success 'SVN-side change inside of ignored www' '
 	(
 		cd s &&
-		echo zaq >> www/test_www.txt
+		echo zaq >> www/test_www.txt &&
 		svn_cmd commit -m "SVN-side change inside of www/test_www.txt" &&
 		svn_cmd up &&
 		svn_cmd log -v | fgrep "SVN-side change inside of www/test_www.txt"
@@ -114,8 +114,8 @@ test_expect_success 'update git svn-cloned repo (option ignore)' '
 test_expect_success 'SVN-side change in and out of ignored www' '
 	(
 		cd s &&
-		echo cvf >> www/test_www.txt
-		echo ygg >> qqq/test_qqq.txt
+		echo cvf >> www/test_www.txt &&
+		echo ygg >> qqq/test_qqq.txt &&
 		svn_cmd commit -m "SVN-side change in and out of ignored www" &&
 		svn_cmd up &&
 		svn_cmd log -v | fgrep "SVN-side change in and out of ignored www"
diff --git a/t/t9137-git-svn-dcommit-clobber-series.sh b/t/t9137-git-svn-dcommit-clobber-series.sh
index 5fa07a369f..067b15bad2 100755
--- a/t/t9137-git-svn-dcommit-clobber-series.sh
+++ b/t/t9137-git-svn-dcommit-clobber-series.sh
@@ -7,7 +7,7 @@ test_description='git svn dcommit clobber series'
 test_expect_success 'initialize repo' '
 	mkdir import &&
 	(cd import &&
-	awk "BEGIN { for (i = 1; i < 64; i++) { print i } }" > file
+	awk "BEGIN { for (i = 1; i < 64; i++) { print i } }" > file &&
 	svn_cmd import -m "initial" . "$svnrepo"
 	) &&
 	git svn init "$svnrepo" &&
diff --git a/t/t9138-git-svn-authors-prog.sh b/t/t9138-git-svn-authors-prog.sh
index 93ef44fae8..027b416720 100755
--- a/t/t9138-git-svn-authors-prog.sh
+++ b/t/t9138-git-svn-authors-prog.sh
@@ -38,7 +38,7 @@ test_expect_success 'import authors with prog and file' '
 
 test_expect_success 'imported 6 revisions successfully' '
 	(
-		cd x
+		cd x &&
 		git rev-list refs/remotes/git-svn >actual &&
 		test_line_count = 6 actual
 	)
@@ -46,7 +46,7 @@ test_expect_success 'imported 6 revisions successfully' '
 
 test_expect_success 'authors-prog ran correctly' '
 	(
-		cd x
+		cd x &&
 		git rev-list -1 --pretty=raw refs/remotes/git-svn~1 >actual &&
 		grep "^author ee-foo <ee-foo@example\.com> " actual &&
 		git rev-list -1 --pretty=raw refs/remotes/git-svn~2 >actual &&
@@ -62,7 +62,7 @@ test_expect_success 'authors-prog ran correctly' '
 
 test_expect_success 'authors-file overrode authors-prog' '
 	(
-		cd x
+		cd x &&
 		git rev-list -1 --pretty=raw refs/remotes/git-svn >actual &&
 		grep "^author FFFFFFF FFFFFFF <fFf@other\.example\.com> " actual
 	)
diff --git a/t/t9146-git-svn-empty-dirs.sh b/t/t9146-git-svn-empty-dirs.sh
index 6d3130e618..5f91c0d68b 100755
--- a/t/t9146-git-svn-empty-dirs.sh
+++ b/t/t9146-git-svn-empty-dirs.sh
@@ -21,7 +21,7 @@ test_expect_success 'empty directories exist' '
 		do
 			if ! test -d "$i"
 			then
-				echo >&2 "$i does not exist"
+				echo >&2 "$i does not exist" &&
 				exit 1
 			fi
 		done
@@ -38,7 +38,7 @@ test_expect_success 'option automkdirs set to false' '
 		do
 			if test -d "$i"
 			then
-				echo >&2 "$i exists"
+				echo >&2 "$i exists" &&
 				exit 1
 			fi
 		done
@@ -63,7 +63,7 @@ test_expect_success 'git svn mkdirs recreates empty directories' '
 		do
 			if ! test -d "$i"
 			then
-				echo >&2 "$i does not exist"
+				echo >&2 "$i does not exist" &&
 				exit 1
 			fi
 		done
@@ -79,21 +79,21 @@ test_expect_success 'git svn mkdirs -r works' '
 		do
 			if ! test -d "$i"
 			then
-				echo >&2 "$i does not exist"
+				echo >&2 "$i does not exist" &&
 				exit 1
 			fi
-		done
+		done &&
 
 		if test -d "! !"
 		then
-			echo >&2 "$i should not exist"
+			echo >&2 "$i should not exist" &&
 			exit 1
-		fi
+		fi &&
 
 		git svn mkdirs -r8 &&
 		if ! test -d "! !"
 		then
-			echo >&2 "$i not exist"
+			echo >&2 "$i not exist" &&
 			exit 1
 		fi
 	)
@@ -115,7 +115,7 @@ test_expect_success 'empty directories in trunk exist' '
 		do
 			if ! test -d "$i"
 			then
-				echo >&2 "$i does not exist"
+				echo >&2 "$i does not exist" &&
 				exit 1
 			fi
 		done
@@ -148,7 +148,7 @@ test_expect_success 'git svn gc-ed files work' '
 			do
 				if ! test -d "$i"
 				then
-					echo >&2 "$i does not exist"
+					echo >&2 "$i does not exist" &&
 					exit 1
 				fi
 			done
diff --git a/t/t9147-git-svn-include-paths.sh b/t/t9147-git-svn-include-paths.sh
index a90ff58629..d292bf9f55 100755
--- a/t/t9147-git-svn-include-paths.sh
+++ b/t/t9147-git-svn-include-paths.sh
@@ -84,7 +84,7 @@ test_expect_success 'update git svn-cloned repo (option include)' '
 test_expect_success 'SVN-side change inside of ignored www' '
 	(
 		cd s &&
-		echo zaq >> www/test_www.txt
+		echo zaq >> www/test_www.txt &&
 		svn_cmd commit -m "SVN-side change inside of www/test_www.txt" &&
 		svn_cmd up &&
 		svn_cmd log -v | fgrep "SVN-side change inside of www/test_www.txt"
@@ -116,8 +116,8 @@ test_expect_success 'update git svn-cloned repo (option include)' '
 test_expect_success 'SVN-side change in and out of included qqq' '
 	(
 		cd s &&
-		echo cvf >> www/test_www.txt
-		echo ygg >> qqq/test_qqq.txt
+		echo cvf >> www/test_www.txt &&
+		echo ygg >> qqq/test_qqq.txt &&
 		svn_cmd commit -m "SVN-side change in and out of ignored www" &&
 		svn_cmd up &&
 		svn_cmd log -v | fgrep "SVN-side change in and out of ignored www"
diff --git a/t/t9152-svn-empty-dirs-after-gc.sh b/t/t9152-svn-empty-dirs-after-gc.sh
index 301e779709..89f285d082 100755
--- a/t/t9152-svn-empty-dirs-after-gc.sh
+++ b/t/t9152-svn-empty-dirs-after-gc.sh
@@ -30,7 +30,7 @@ test_expect_success 'git svn mkdirs recreates empty directories after git svn gc
 		do
 			if ! test -d "$i"
 			then
-				echo >&2 "$i does not exist"
+				echo >&2 "$i does not exist" &&
 				exit 1
 			fi
 		done
diff --git a/t/t9164-git-svn-dcommit-concurrent.sh b/t/t9164-git-svn-dcommit-concurrent.sh
index d8464d4218..90346ff4e9 100755
--- a/t/t9164-git-svn-dcommit-concurrent.sh
+++ b/t/t9164-git-svn-dcommit-concurrent.sh
@@ -12,7 +12,7 @@ test_expect_success 'setup svn repository' '
 	svn_cmd checkout "$svnrepo" work.svn &&
 	(
 		cd work.svn &&
-		echo >file && echo > auto_updated_file
+		echo >file && echo > auto_updated_file &&
 		svn_cmd add file auto_updated_file &&
 		svn_cmd commit -m "initial commit"
 	) &&
diff --git a/t/t9165-git-svn-fetch-merge-branch-of-branch.sh b/t/t9165-git-svn-fetch-merge-branch-of-branch.sh
index fa3ef3b1f7..a4813c2b09 100755
--- a/t/t9165-git-svn-fetch-merge-branch-of-branch.sh
+++ b/t/t9165-git-svn-fetch-merge-branch-of-branch.sh
@@ -39,7 +39,7 @@ test_expect_success 'initialize source svn repo' '
 		svn_cmd commit -m trunk &&
 		svn_cmd switch "$svnrepo"/branches/branch2 &&
 		svn_cmd merge "$svnrepo"/trunk &&
-		svn_cmd commit -m "merge trunk"
+		svn_cmd commit -m "merge trunk" &&
 		svn_cmd switch "$svnrepo"/trunk &&
 		svn_cmd merge --reintegrate "$svnrepo"/branches/branch2 &&
 		svn_cmd commit -m "merge branch2"
diff --git a/t/t9200-git-cvsexportcommit.sh b/t/t9200-git-cvsexportcommit.sh
index 1319415ba8..cd61288aa1 100755
--- a/t/t9200-git-cvsexportcommit.sh
+++ b/t/t9200-git-cvsexportcommit.sh
@@ -187,7 +187,7 @@ test_expect_success \
       git commit -a -m "Update with spaces" &&
       id=$(git rev-list --max-count=1 HEAD) &&
       (cd "$CVSWORK" &&
-      git cvsexportcommit -c $id
+      git cvsexportcommit -c $id &&
       check_entries "G g" "with spaces.png/1.2/-kb|with spaces.txt/1.2/"
       )'
 
@@ -245,7 +245,7 @@ test_expect_success FILEMODE \
       git add G/off &&
       git commit -a -m "Execute test" &&
       (cd "$CVSWORK" &&
-      git cvsexportcommit -c HEAD
+      git cvsexportcommit -c HEAD &&
       test -x G/on &&
       ! test -x G/off
       )'
@@ -303,7 +303,7 @@ test_expect_success 're-commit a removed filename which remains in CVS attic' '
     git add attic_gremlin &&
     git commit -m "Added attic_gremlin" &&
 	git cvsexportcommit -w "$CVSWORK" -c HEAD &&
-    (cd "$CVSWORK"; cvs -Q update -d) &&
+    (cd "$CVSWORK" && cvs -Q update -d) &&
     test -f "$CVSWORK/attic_gremlin"
 '
 
diff --git a/t/t9302-fast-import-unpack-limit.sh b/t/t9302-fast-import-unpack-limit.sh
index a04de14677..bb1c39cfcc 100755
--- a/t/t9302-fast-import-unpack-limit.sh
+++ b/t/t9302-fast-import-unpack-limit.sh
@@ -80,7 +80,7 @@ test_expect_success 'lookups after checkpoint works' '
 		do
 			if test $n -gt 30
 			then
-				echo >&2 "checkpoint did not update branch"
+				echo >&2 "checkpoint did not update branch" &&
 				exit 1
 			else
 				n=$(($n + 1))
diff --git a/t/t9400-git-cvsserver-server.sh b/t/t9400-git-cvsserver-server.sh
index 06742748e9..a5e5dca753 100755
--- a/t/t9400-git-cvsserver-server.sh
+++ b/t/t9400-git-cvsserver-server.sh
@@ -328,7 +328,7 @@ test_expect_success 'cvs update (subdirectories)' \
   '(for dir in A A/B A/B/C A/D E; do
       mkdir $dir &&
       echo "test file in $dir" >"$dir/file_in_$(echo $dir|sed -e "s#/# #g")"  &&
-      git add $dir;
+      git add $dir
    done) &&
    git commit -q -m "deep sub directory structure" &&
    git push gitcvs.git >/dev/null &&
@@ -371,7 +371,7 @@ test_expect_success 'cvs update (merge)' \
   'echo Line 0 >expected &&
    for i in 1 2 3 4 5 6 7
    do
-     echo Line $i >>merge
+     echo Line $i >>merge &&
      echo Line $i >>expected
    done &&
    echo Line 8 >>expected &&
@@ -382,7 +382,7 @@ test_expect_success 'cvs update (merge)' \
    GIT_CONFIG="$git_config" cvs -Q update &&
    test "$(echo $(grep merge CVS/Entries|cut -d/ -f2,3,5))" = "merge/1.1/" &&
    test_cmp merge ../merge &&
-   ( echo Line 0; cat merge ) >merge.tmp &&
+   ( echo Line 0 && cat merge ) >merge.tmp &&
    mv merge.tmp merge &&
    cd "$WORKDIR" &&
    echo Line 8 >>merge &&
@@ -410,7 +410,7 @@ do
 done
 
 test_expect_success 'cvs update (conflict merge)' \
-  '( echo LINE 0; cat merge ) >merge.tmp &&
+  '( echo LINE 0 && cat merge ) >merge.tmp &&
    mv merge.tmp merge &&
    git add merge &&
    git commit -q -m "Merge test (conflict)" &&
diff --git a/t/t9600-cvsimport.sh b/t/t9600-cvsimport.sh
index 804ce3850f..5dfee07d9a 100755
--- a/t/t9600-cvsimport.sh
+++ b/t/t9600-cvsimport.sh
@@ -135,7 +135,7 @@ test_expect_success PERL 'second update has correct .git/cvs-revisions' '
 
 	(cd module-git &&
 	 git log --format="o_fortuna 1.1 %H" -1 HEAD^^ &&
-	 git log --format="o_fortuna 1.2 %H" -1 HEAD^
+	 git log --format="o_fortuna 1.2 %H" -1 HEAD^ &&
 	 git log --format="tick 1.1 %H" -1 HEAD) > expected &&
 	test_cmp expected module-git/.git/cvs-revisions
 '
diff --git a/t/t9806-git-p4-options.sh b/t/t9806-git-p4-options.sh
index 1ab76c4246..3f5291b857 100755
--- a/t/t9806-git-p4-options.sh
+++ b/t/t9806-git-p4-options.sh
@@ -134,7 +134,7 @@ test_expect_success 'clone --changesfile' '
 	(
 		cd "$git" &&
 		git log --oneline p4/master >lines &&
-		test_line_count = 2 lines
+		test_line_count = 2 lines &&
 		test_path_is_file file1 &&
 		test_path_is_missing file2 &&
 		test_path_is_file file3
diff --git a/t/t9810-git-p4-rcs.sh b/t/t9810-git-p4-rcs.sh
index 8134ab439b..cc53debe19 100755
--- a/t/t9810-git-p4-rcs.sh
+++ b/t/t9810-git-p4-rcs.sh
@@ -161,7 +161,7 @@ test_expect_success 'cleanup after failure' '
 test_expect_success 'ktext expansion should not expand multi-line $File::' '
 	(
 		cd "$cli" &&
-		cat >lv.pm <<-\EOF
+		cat >lv.pm <<-\EOF &&
 		my $wanted = sub { my $f = $File::Find::name;
 				    if ( -f && $f =~ /foo/ ) {
 		EOF
diff --git a/t/t9811-git-p4-label-import.sh b/t/t9811-git-p4-label-import.sh
index decb66ba30..602b0a5d5c 100755
--- a/t/t9811-git-p4-label-import.sh
+++ b/t/t9811-git-p4-label-import.sh
@@ -133,7 +133,7 @@ test_expect_success 'export git tags to p4' '
 		p4 labels ... | grep LIGHTWEIGHT_TAG &&
 		p4 label -o GIT_TAG_1 | grep "tag created in git:xyzzy" &&
 		p4 sync ...@GIT_TAG_1 &&
-		! test -f main/f10
+		! test -f main/f10 &&
 		p4 sync ...@GIT_TAG_2 &&
 		test -f main/f10
 	)
diff --git a/t/t9814-git-p4-rename.sh b/t/t9814-git-p4-rename.sh
index e7e0268e98..60baa06e27 100755
--- a/t/t9814-git-p4-rename.sh
+++ b/t/t9814-git-p4-rename.sh
@@ -9,23 +9,11 @@ test_expect_success 'start p4d' '
 '
 
 # We rely on this behavior to detect for p4 move availability.
-test_expect_success 'p4 help unknown returns 1' '
+test_expect_success '"p4 help unknown" errors out' '
 	(
 		cd "$cli" &&
-		(
-			p4 help client >errs 2>&1
-			echo $? >retval
-		)
-		echo 0 >expected &&
-		test_cmp expected retval &&
-		rm retval &&
-		(
-			p4 help nosuchcommand >errs 2>&1
-			echo $? >retval
-		)
-		echo 1 >expected &&
-		test_cmp expected retval &&
-		rm retval
+		p4 help client &&
+		! p4 help nosuchcommand
 	)
 '
 
diff --git a/t/t9815-git-p4-submit-fail.sh b/t/t9815-git-p4-submit-fail.sh
index 37b42d03a2..eaf03a6563 100755
--- a/t/t9815-git-p4-submit-fail.sh
+++ b/t/t9815-git-p4-submit-fail.sh
@@ -394,7 +394,7 @@ test_expect_success 'cleanup rename after submit cancel' '
 	(
 		cd "$cli" &&
 		test_path_is_missing text2 &&
-		p4 fstat -T action text2 2>&1 | grep "no such file"
+		p4 fstat -T action text2 2>&1 | grep "no such file" &&
 		test_path_is_file text &&
 		! p4 fstat -T action text
 	)
diff --git a/t/t9830-git-p4-symlink-dir.sh b/t/t9830-git-p4-symlink-dir.sh
index 3dc528bb1e..2ad1b0810d 100755
--- a/t/t9830-git-p4-symlink-dir.sh
+++ b/t/t9830-git-p4-symlink-dir.sh
@@ -30,7 +30,7 @@ test_expect_success 'symlinked directory' '
 	(
 		cd "$cli" &&
 		p4 sync &&
-		test -L some/sub/directory/subdir2
+		test -L some/sub/directory/subdir2 &&
 		test_path_is_file some/sub/directory/subdir2/file.t
 	)
 
diff --git a/t/t9831-git-p4-triggers.sh b/t/t9831-git-p4-triggers.sh
index bbcf14c664..be44c9751a 100755
--- a/t/t9831-git-p4-triggers.sh
+++ b/t/t9831-git-p4-triggers.sh
@@ -13,7 +13,7 @@ test_expect_success 'init depot' '
 		cd "$cli" &&
 		echo file1 >file1 &&
 		p4 add file1 &&
-		p4 submit -d "change 1"
+		p4 submit -d "change 1" &&
 		echo file2 >file2 &&
 		p4 add file2 &&
 		p4 submit -d "change 2"
diff --git a/t/t9902-completion.sh b/t/t9902-completion.sh
index 3b3a7b66e4..5ff43b9cbb 100755
--- a/t/t9902-completion.sh
+++ b/t/t9902-completion.sh
@@ -1103,7 +1103,7 @@ test_expect_success '__git_complete_refs - remote' '
 	master-in-other Z
 	EOF
 	(
-		cur=
+		cur= &&
 		__git_complete_refs --remote=other &&
 		print_comp
 	) &&
@@ -1122,7 +1122,7 @@ test_expect_success '__git_complete_refs - track' '
 	master-in-other Z
 	EOF
 	(
-		cur=
+		cur= &&
 		__git_complete_refs --track &&
 		print_comp
 	) &&
diff --git a/t/t9903-bash-prompt.sh b/t/t9903-bash-prompt.sh
index c3b89ae783..04440685a6 100755
--- a/t/t9903-bash-prompt.sh
+++ b/t/t9903-bash-prompt.sh
@@ -529,7 +529,7 @@ test_expect_success 'prompt - bash color pc mode - branch name' '
 	printf "BEFORE: (${c_green}\${__git_ps1_branch_name}${c_clear}):AFTER\\nmaster" >expected &&
 	(
 		GIT_PS1_SHOWCOLORHINTS=y &&
-		__git_ps1 "BEFORE:" ":AFTER" >"$actual"
+		__git_ps1 "BEFORE:" ":AFTER" >"$actual" &&
 		printf "%s\\n%s" "$PS1" "${__git_ps1_branch_name}" >"$actual"
 	) &&
 	test_cmp expected "$actual"