diff --git a/Documentation/user-manual.txt b/Documentation/user-manual.txt
index 0170a2346c..e831cc2020 100644
--- a/Documentation/user-manual.txt
+++ b/Documentation/user-manual.txt
@@ -2338,7 +2338,7 @@ origin)
 	fi
 	;;
 *)
-	echo "Usage: $0 origin|test|release" 1>&2
+	echo "usage: $0 origin|test|release" 1>&2
 	exit 1
 	;;
 esac
@@ -2352,7 +2352,7 @@ pname=$0
 
 usage()
 {
-	echo "Usage: $pname branch test|release" 1>&2
+	echo "usage: $pname branch test|release" 1>&2
 	exit 1
 }
 
diff --git a/contrib/credential/gnome-keyring/git-credential-gnome-keyring.c b/contrib/credential/gnome-keyring/git-credential-gnome-keyring.c
index 41f61c5db3..f2cdefee60 100644
--- a/contrib/credential/gnome-keyring/git-credential-gnome-keyring.c
+++ b/contrib/credential/gnome-keyring/git-credential-gnome-keyring.c
@@ -401,7 +401,7 @@ static void usage(const char *name)
 	const char *basename = strrchr(name,'/');
 
 	basename = (basename) ? basename + 1 : name;
-	fprintf(stderr, "Usage: %s <", basename);
+	fprintf(stderr, "usage: %s <", basename);
 	while(try_op->name) {
 		fprintf(stderr,"%s",(try_op++)->name);
 		if(try_op->name)
diff --git a/contrib/credential/osxkeychain/git-credential-osxkeychain.c b/contrib/credential/osxkeychain/git-credential-osxkeychain.c
index 6beed123ab..3940202b36 100644
--- a/contrib/credential/osxkeychain/git-credential-osxkeychain.c
+++ b/contrib/credential/osxkeychain/git-credential-osxkeychain.c
@@ -154,7 +154,7 @@ static void read_credential(void)
 int main(int argc, const char **argv)
 {
 	const char *usage =
-		"Usage: git credential-osxkeychain <get|store|erase>";
+		"usage: git credential-osxkeychain <get|store|erase>";
 
 	if (!argv[1])
 		die(usage);
diff --git a/contrib/credential/wincred/git-credential-wincred.c b/contrib/credential/wincred/git-credential-wincred.c
index dac19eac81..a1d38f035b 100644
--- a/contrib/credential/wincred/git-credential-wincred.c
+++ b/contrib/credential/wincred/git-credential-wincred.c
@@ -259,7 +259,7 @@ static void read_credential(void)
 int main(int argc, char *argv[])
 {
 	const char *usage =
-	    "Usage: git credential-wincred <get|store|erase>\n";
+	    "usage: git credential-wincred <get|store|erase>\n";
 
 	if (!argv[1])
 		die(usage);
diff --git a/contrib/examples/git-remote.perl b/contrib/examples/git-remote.perl
index b17952a785..d42df7b418 100755
--- a/contrib/examples/git-remote.perl
+++ b/contrib/examples/git-remote.perl
@@ -347,7 +347,7 @@ sub rm_remote {
 }
 
 sub add_usage {
-	print STDERR "Usage: git remote add [-f] [-t track]* [-m master] <name> <url>\n";
+	print STDERR "usage: git remote add [-f] [-t track]* [-m master] <name> <url>\n";
 	exit(1);
 }
 
@@ -380,7 +380,7 @@ elsif ($ARGV[0] eq 'show') {
 		}
 	}
 	if ($i >= @ARGV) {
-		print STDERR "Usage: git remote show <remote>\n";
+		print STDERR "usage: git remote show <remote>\n";
 		exit(1);
 	}
 	my $status = 0;
@@ -410,7 +410,7 @@ elsif ($ARGV[0] eq 'prune') {
 		}
 	}
 	if ($i >= @ARGV) {
-		print STDERR "Usage: git remote prune <remote>\n";
+		print STDERR "usage: git remote prune <remote>\n";
 		exit(1);
 	}
 	my $status = 0;
@@ -458,13 +458,13 @@ elsif ($ARGV[0] eq 'add') {
 }
 elsif ($ARGV[0] eq 'rm') {
 	if (@ARGV <= 1) {
-		print STDERR "Usage: git remote rm <remote>\n";
+		print STDERR "usage: git remote rm <remote>\n";
 		exit(1);
 	}
 	exit(rm_remote($ARGV[1]));
 }
 else {
-	print STDERR "Usage: git remote\n";
+	print STDERR "usage: git remote\n";
 	print STDERR "       git remote add <name> <url>\n";
 	print STDERR "       git remote rm <name>\n";
 	print STDERR "       git remote show <name>\n";
diff --git a/contrib/examples/git-svnimport.perl b/contrib/examples/git-svnimport.perl
index b09ff8f12f..c414f0d9c7 100755
--- a/contrib/examples/git-svnimport.perl
+++ b/contrib/examples/git-svnimport.perl
@@ -36,7 +36,7 @@ our($opt_h,$opt_o,$opt_v,$opt_u,$opt_C,$opt_i,$opt_m,$opt_M,$opt_t,$opt_T,
 
 sub usage() {
 	print STDERR <<END;
-Usage: ${\basename $0}     # fetch/update GIT from SVN
+usage: ${\basename $0}     # fetch/update GIT from SVN
        [-o branch-for-HEAD] [-h] [-v] [-l max_rev] [-R repack_each_revs]
        [-C GIT_repository] [-t tagname] [-T trunkname] [-b branchname]
        [-d|-D] [-i] [-u] [-r] [-I ignorefilename] [-s start_chg]
diff --git a/contrib/fast-import/git-import.perl b/contrib/fast-import/git-import.perl
index f9fef6db28..0891b9e366 100755
--- a/contrib/fast-import/git-import.perl
+++ b/contrib/fast-import/git-import.perl
@@ -7,7 +7,7 @@
 use strict;
 use File::Find;
 
-my $USAGE = 'Usage: git-import branch import-message';
+my $USAGE = 'usage: git-import branch import-message';
 my $branch = shift or die "$USAGE\n";
 my $message = shift or die "$USAGE\n";
 
diff --git a/contrib/fast-import/git-import.sh b/contrib/fast-import/git-import.sh
index 0ca7718d05..f8d803c5e2 100755
--- a/contrib/fast-import/git-import.sh
+++ b/contrib/fast-import/git-import.sh
@@ -5,7 +5,7 @@
 # but is meant to be a simple fast-import example.
 
 if [ -z "$1" -o -z "$2" ]; then
-	echo "Usage: git-import branch import-message"
+	echo "usage: git-import branch import-message"
 	exit 1
 fi
 
diff --git a/contrib/fast-import/import-zips.py b/contrib/fast-import/import-zips.py
index 5cec9b0129..d12c296223 100755
--- a/contrib/fast-import/import-zips.py
+++ b/contrib/fast-import/import-zips.py
@@ -14,13 +14,13 @@ from time import mktime
 from zipfile import ZipFile
 
 if hexversion < 0x01060000:
-        # The limiter is the zipfile module
-        sys.stderr.write("import-zips.py: requires Python 1.6.0 or later.\n")
-        sys.exit(1)
+    # The limiter is the zipfile module
+    stderr.write("import-zips.py: requires Python 1.6.0 or later.\n")
+    exit(1)
 
 if len(argv) < 2:
-	print 'Usage:', argv[0], '<zipfile>...'
-	exit(1)
+    print 'usage:', argv[0], '<zipfile>...'
+    exit(1)
 
 branch_ref = 'refs/heads/import-zips'
 committer_name = 'Z Ip Creator'
@@ -28,51 +28,51 @@ committer_email = 'zip@example.com'
 
 fast_import = popen('git fast-import --quiet', 'w')
 def printlines(list):
-	for str in list:
-		fast_import.write(str + "\n")
+    for str in list:
+        fast_import.write(str + "\n")
 
 for zipfile in argv[1:]:
-	commit_time = 0
-	next_mark = 1
-	common_prefix = None
-	mark = dict()
+    commit_time = 0
+    next_mark = 1
+    common_prefix = None
+    mark = dict()
 
-	zip = ZipFile(zipfile, 'r')
-	for name in zip.namelist():
-		if name.endswith('/'):
-			continue
-		info = zip.getinfo(name)
+    zip = ZipFile(zipfile, 'r')
+    for name in zip.namelist():
+        if name.endswith('/'):
+            continue
+        info = zip.getinfo(name)
 
-		if commit_time < info.date_time:
-			commit_time = info.date_time
-		if common_prefix == None:
-			common_prefix = name[:name.rfind('/') + 1]
-		else:
-			while not name.startswith(common_prefix):
-				last_slash = common_prefix[:-1].rfind('/') + 1
-				common_prefix = common_prefix[:last_slash]
+        if commit_time < info.date_time:
+            commit_time = info.date_time
+        if common_prefix == None:
+            common_prefix = name[:name.rfind('/') + 1]
+        else:
+            while not name.startswith(common_prefix):
+                last_slash = common_prefix[:-1].rfind('/') + 1
+                common_prefix = common_prefix[:last_slash]
 
-		mark[name] = ':' + str(next_mark)
-		next_mark += 1
+        mark[name] = ':' + str(next_mark)
+        next_mark += 1
 
-		printlines(('blob', 'mark ' + mark[name], \
-					'data ' + str(info.file_size)))
-		fast_import.write(zip.read(name) + "\n")
+        printlines(('blob', 'mark ' + mark[name], \
+                    'data ' + str(info.file_size)))
+        fast_import.write(zip.read(name) + "\n")
 
-	committer = committer_name + ' <' + committer_email + '> %d +0000' % \
-		mktime(commit_time + (0, 0, 0))
+    committer = committer_name + ' <' + committer_email + '> %d +0000' % \
+        mktime(commit_time + (0, 0, 0))
 
-	printlines(('commit ' + branch_ref, 'committer ' + committer, \
-		'data <<EOM', 'Imported from ' + zipfile + '.', 'EOM', \
-		'', 'deleteall'))
+    printlines(('commit ' + branch_ref, 'committer ' + committer, \
+        'data <<EOM', 'Imported from ' + zipfile + '.', 'EOM', \
+        '', 'deleteall'))
 
-	for name in mark.keys():
-		fast_import.write('M 100644 ' + mark[name] + ' ' +
-			name[len(common_prefix):] + "\n")
+    for name in mark.keys():
+        fast_import.write('M 100644 ' + mark[name] + ' ' +
+            name[len(common_prefix):] + "\n")
 
-	printlines(('',  'tag ' + path.basename(zipfile), \
-		'from ' + branch_ref, 'tagger ' + committer, \
-		'data <<EOM', 'Package ' + zipfile, 'EOM', ''))
+    printlines(('',  'tag ' + path.basename(zipfile), \
+        'from ' + branch_ref, 'tagger ' + committer, \
+        'data <<EOM', 'Package ' + zipfile, 'EOM', ''))
 
 if fast_import.close():
-	exit(1)
+    exit(1)
diff --git a/contrib/hooks/setgitperms.perl b/contrib/hooks/setgitperms.perl
index a577ad095f..2770a1b1d2 100644
--- a/contrib/hooks/setgitperms.perl
+++ b/contrib/hooks/setgitperms.perl
@@ -24,7 +24,7 @@ use File::Find;
 use File::Basename;
 
 my $usage =
-"Usage: setgitperms.perl [OPTION]... <--read|--write>
+"usage: setgitperms.perl [OPTION]... <--read|--write>
 This program uses a file `.gitmeta` to store/restore permissions and uid/gid
 info for all files/dirs tracked by git in the repository.
 
diff --git a/contrib/mw-to-git/t/install-wiki.sh b/contrib/mw-to-git/t/install-wiki.sh
index c6d6fa3aef..70a53f67fd 100755
--- a/contrib/mw-to-git/t/install-wiki.sh
+++ b/contrib/mw-to-git/t/install-wiki.sh
@@ -15,7 +15,7 @@ fi
 
 . "$WIKI_TEST_DIR"/test-gitmw-lib.sh
 usage () {
-	echo "Usage: "
+	echo "usage: "
 	echo "	./install-wiki.sh <install | delete | --help>"
 	echo "		install | -i :	Install a wiki on your computer."
 	echo "		delete | -d : Delete the wiki and all its pages and "
diff --git a/git-archimport.perl b/git-archimport.perl
index bc32f18d6d..9cb123a07d 100755
--- a/git-archimport.perl
+++ b/git-archimport.perl
@@ -75,7 +75,7 @@ our($opt_h,$opt_f,$opt_v,$opt_T,$opt_t,$opt_D,$opt_a,$opt_o);
 
 sub usage() {
     print STDERR <<END;
-Usage: git archimport     # fetch/update GIT from Arch
+usage: git archimport     # fetch/update GIT from Arch
        [ -h ] [ -v ] [ -o ] [ -a ] [ -f ] [ -T ] [ -D depth ] [ -t tempdir ]
        repository/arch-branch [ repository/arch-branch] ...
 END
diff --git a/git-cvsexportcommit.perl b/git-cvsexportcommit.perl
index e6bf25232c..d13f02da95 100755
--- a/git-cvsexportcommit.perl
+++ b/git-cvsexportcommit.perl
@@ -420,7 +420,7 @@ sleep(1);
 
 sub usage {
 	print STDERR <<END;
-Usage: GIT_DIR=/path/to/.git git cvsexportcommit [-h] [-p] [-v] [-c] [-f] [-u] [-k] [-w cvsworkdir] [-m msgprefix] [ parent ] commit
+usage: GIT_DIR=/path/to/.git git cvsexportcommit [-h] [-p] [-v] [-c] [-f] [-u] [-k] [-w cvsworkdir] [-m msgprefix] [ parent ] commit
 END
 	exit(1);
 }
diff --git a/git-cvsimport.perl b/git-cvsimport.perl
index 344f1206d1..73d367cea8 100755
--- a/git-cvsimport.perl
+++ b/git-cvsimport.perl
@@ -38,7 +38,7 @@ sub usage(;$) {
 	my $msg = shift;
 	print(STDERR "Error: $msg\n") if $msg;
 	print STDERR <<END;
-Usage: git cvsimport     # fetch/update GIT from CVS
+usage: git cvsimport     # fetch/update GIT from CVS
        [-o branch-for-HEAD] [-h] [-v] [-d CVSROOT] [-A author-conv-file]
        [-p opts-for-cvsps] [-P file] [-C GIT_repository] [-z fuzz] [-i] [-k]
        [-u] [-s subst] [-a] [-m] [-M regex] [-S regex] [-L commitlimit]
diff --git a/git-cvsserver.perl b/git-cvsserver.perl
index 3679074983..f1c3f49a83 100755
--- a/git-cvsserver.perl
+++ b/git-cvsserver.perl
@@ -107,7 +107,7 @@ my $work =
 $log->info("--------------- STARTING -----------------");
 
 my $usage =
-    "Usage: git cvsserver [options] [pserver|server] [<directory> ...]\n".
+    "usage: git cvsserver [options] [pserver|server] [<directory> ...]\n".
     "    --base-path <path>  : Prepend to requested CVSROOT\n".
     "                          Can be read from GIT_CVSSERVER_BASE_PATH\n".
     "    --strict-paths      : Don't allow recursing into subdirectories\n".
diff --git a/git-merge-one-file.sh b/git-merge-one-file.sh
index f612cb847a..3373c040d4 100755
--- a/git-merge-one-file.sh
+++ b/git-merge-one-file.sh
@@ -18,7 +18,7 @@
 
 USAGE='<orig blob> <our blob> <their blob> <path>'
 USAGE="$USAGE <orig mode> <our mode> <their mode>"
-LONG_USAGE="Usage: git merge-one-file $USAGE
+LONG_USAGE="usage: git merge-one-file $USAGE
 
 Blob ids and modes should be empty for missing files."
 
diff --git a/git-relink.perl b/git-relink.perl
index f29285c411..236a3521a1 100755
--- a/git-relink.perl
+++ b/git-relink.perl
@@ -163,7 +163,7 @@ sub link_two_files($$) {
 
 
 sub usage() {
-	print("Usage: git relink [--safe] <dir>... <master_dir> \n");
+	print("usage: git relink [--safe] <dir>... <master_dir> \n");
 	print("All directories should contain a .git/objects/ subdirectory.\n");
 	print("Options\n");
 	print("\t--safe\t" .
diff --git a/git-sh-setup.sh b/git-sh-setup.sh
index 795edd2852..9cfbe7f143 100644
--- a/git-sh-setup.sh
+++ b/git-sh-setup.sh
@@ -84,14 +84,14 @@ if test -n "$OPTIONS_SPEC"; then
 else
 	dashless=$(basename "$0" | sed -e 's/-/ /')
 	usage() {
-		die "Usage: $dashless $USAGE"
+		die "usage: $dashless $USAGE"
 	}
 
 	if [ -z "$LONG_USAGE" ]
 	then
-		LONG_USAGE="Usage: $dashless $USAGE"
+		LONG_USAGE="usage: $dashless $USAGE"
 	else
-		LONG_USAGE="Usage: $dashless $USAGE
+		LONG_USAGE="usage: $dashless $USAGE
 
 $LONG_USAGE"
 	fi
diff --git a/git-svn.perl b/git-svn.perl
index b46795f593..6c7bd95032 100755
--- a/git-svn.perl
+++ b/git-svn.perl
@@ -382,7 +382,7 @@ sub usage {
 	my $fd = $exit ? \*STDERR : \*STDOUT;
 	print $fd <<"";
 git-svn - bidirectional operations between a single Subversion tree and git
-Usage: git svn <command> [options] [arguments]\n
+usage: git svn <command> [options] [arguments]\n
 
 	print $fd "Available commands:\n" unless $cmd;
 
@@ -534,7 +534,7 @@ sub cmd_fetch {
 	}
 	my ($remote) = @_;
 	if (@_ > 1) {
-		die "Usage: $0 fetch [--all] [--parent] [svn-remote]\n";
+		die "usage: $0 fetch [--all] [--parent] [svn-remote]\n";
 	}
 	$Git::SVN::no_reuse_existing = undef;
 	if ($_fetch_parent) {
@@ -1404,7 +1404,7 @@ sub cmd_multi_fetch {
 # this command is special because it requires no metadata
 sub cmd_commit_diff {
 	my ($ta, $tb, $url) = @_;
-	my $usage = "Usage: $0 commit-diff -r<revision> ".
+	my $usage = "usage: $0 commit-diff -r<revision> ".
 	            "<tree-ish> <tree-ish> [<URL>]";
 	fatal($usage) if (!defined $ta || !defined $tb);
 	my $svn_path = '';
diff --git a/t/lib-git-svn.sh b/t/lib-git-svn.sh
index 199f22c231..c5e55b190b 100644
--- a/t/lib-git-svn.sh
+++ b/t/lib-git-svn.sh
@@ -148,7 +148,7 @@ stop_httpd () {
 convert_to_rev_db () {
 	"$PERL_PATH" -w -- - "$@" <<\EOF
 use strict;
-@ARGV == 2 or die "Usage: convert_to_rev_db <input> <output>";
+@ARGV == 2 or die "usage: convert_to_rev_db <input> <output>";
 open my $wr, '+>', $ARGV[1] or die "$!: couldn't open: $ARGV[1]";
 open my $rd, '<', $ARGV[0] or die "$!: couldn't open: $ARGV[0]";
 my $size = (stat($rd))[7];
diff --git a/t/t1509/prepare-chroot.sh b/t/t1509/prepare-chroot.sh
index c5334a8fa4..62691172e3 100755
--- a/t/t1509/prepare-chroot.sh
+++ b/t/t1509/prepare-chroot.sh
@@ -14,7 +14,7 @@ xmkdir() {
 
 R="$1"
 
-[ -n "$R" ] || die "Usage: prepare-chroot.sh <root>"
+[ -n "$R" ] || die "usage: prepare-chroot.sh <root>"
 [ -x git ] || die "This script needs to be executed at git source code's top directory"
 [ -x /bin/busybox ] || die "You need busybox"
 
diff --git a/templates/hooks--update.sample b/templates/hooks--update.sample
index 71ab04edc0..d84758373d 100755
--- a/templates/hooks--update.sample
+++ b/templates/hooks--update.sample
@@ -38,7 +38,7 @@ if [ -z "$GIT_DIR" ]; then
 fi
 
 if [ -z "$refname" -o -z "$oldrev" -o -z "$newrev" ]; then
-	echo "Usage: $0 <ref> <oldrev> <newrev>" >&2
+	echo "usage: $0 <ref> <oldrev> <newrev>" >&2
 	exit 1
 fi
 
diff --git a/test-chmtime.c b/test-chmtime.c
index 92713d16da..02b42badd5 100644
--- a/test-chmtime.c
+++ b/test-chmtime.c
@@ -114,6 +114,6 @@ int main(int argc, const char *argv[])
 	return 0;
 
 usage:
-	fprintf(stderr, "Usage: %s %s\n", argv[0], usage_str);
+	fprintf(stderr, "usage: %s %s\n", argv[0], usage_str);
 	return -1;
 }
diff --git a/test-delta.c b/test-delta.c
index af40a3c49e..4595cd6433 100644
--- a/test-delta.c
+++ b/test-delta.c
@@ -23,7 +23,7 @@ int main(int argc, char *argv[])
 	unsigned long from_size, data_size, out_size;
 
 	if (argc != 5 || (strcmp(argv[1], "-d") && strcmp(argv[1], "-p"))) {
-		fprintf(stderr, "Usage: %s\n", usage_str);
+		fprintf(stderr, "usage: %s\n", usage_str);
 		return 1;
 	}
 
diff --git a/test-genrandom.c b/test-genrandom.c
index b3c28d9a1c..54824d0754 100644
--- a/test-genrandom.c
+++ b/test-genrandom.c
@@ -12,7 +12,7 @@ int main(int argc, char *argv[])
 	unsigned char *c;
 
 	if (argc < 2 || argc > 3) {
-		fprintf(stderr, "Usage: %s <seed_string> [<size>]\n", argv[0]);
+		fprintf(stderr, "usage: %s <seed_string> [<size>]\n", argv[0]);
 		return 1;
 	}