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Git with broken hash generation to generate collisions between object IDs. Don't use this! https://undefinedbehavior.de/posts/commit-vandalism/
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Jeff King 188c35e36d git skew: a tool to find how big a clock skew exists in the history 
> As you probably guessed from the specificity of the number, I wrote a
> short program to actually traverse and find the worst skew. It takes
> about 5 seconds to run (unsurprisingly, since it is doing the same full
> traversal that we end up doing in the above numbers). So we could
> "autoskew" by setting up the configuration on clone, and then
> periodically updating it as part of "git gc".

This patch doesn't implement auto-detection of skew, but is the program
I used to calculate, and would provide the basis for such
auto-detection. It would be interesting to see average skew numbers for
popular repositories. You can run it as "git skew --all".

Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-06-30 12:21:13 -07:00
block-sha1 msvc: Select the "fast" definition of the {get,put}_be32() macros 2010-06-27 21:59:32 -07:00
builtin git skew: a tool to find how big a clock skew exists in the history 2011-06-30 12:21:13 -07:00
compat Merge branch 'js/async-thread' 2010-06-21 06:02:45 -07:00
contrib Merge branch 'tr/rev-list-count' 2010-06-30 11:55:38 -07:00
Documentation Git 1.7.2-rc1 2010-06-30 15:49:18 -07:00
git_remote_helpers Remove python 2.5'isms 2010-06-13 20:02:50 -07:00
git-gui Merge git://repo.or.cz/git-gui 2010-02-07 15:52:28 -08:00
gitk-git Merge git://git.kernel.org/pub/scm/gitk/gitk 2010-04-18 18:36:41 -07:00
gitweb Merge branch 'jn/gitweb-return-or-exit-cleanup' 2010-06-22 09:45:22 -07:00
perl Git.pm: better error message 2010-06-18 08:49:03 -07:00
ppc
t Merge branch 'ar/decorate-color' 2010-06-30 11:55:40 -07:00
templates Modernize git calling conventions in hook templates 2010-03-20 09:04:38 -07:00
xdiff xdiff/xmerge.c: use memset() instead of explicit for-loop 2010-05-01 11:11:11 -07:00
.gitattributes
.gitignore git skew: a tool to find how big a clock skew exists in the history 2011-06-30 12:21:13 -07:00
.mailmap Merge branch 'mg/mailmap-update' into maint 2010-04-09 22:22:06 -07:00
abspath.c make_absolute_path(): Do not append redundant slash 2010-02-14 13:21:31 -08:00
aclocal.m4 Some platforms lack socklen_t type 2010-05-31 17:36:27 -07:00
advice.c Reword "detached HEAD" notification 2010-01-29 22:11:00 -08:00
advice.h Reword "detached HEAD" notification 2010-01-29 22:11:00 -08:00
alias.c
alloc.c
archive-tar.c
archive-zip.c
archive.c
archive.h
attr.c Merge branch 'eb/core-eol' 2010-06-21 06:02:49 -07:00
attr.h enums: omit trailing comma for portability 2010-05-31 16:59:27 -07:00
base85.c
bisect.c Merge branch 'cc/maint-bisect-paths' into maint-1.6.6 2010-03-07 14:53:35 -08:00
bisect.h
blob.c
blob.h
branch.c Merge branch 'rc/maint-reflog-msg-for-forced-branch' into maint 2010-04-11 13:39:47 -07:00
branch.h
builtin.h git skew: a tool to find how big a clock skew exists in the history 2011-06-30 12:21:13 -07:00
bundle.c
bundle.h
cache-tree.c
cache-tree.h
cache.h Merge branch 'cp/textconv-cat-file' 2010-06-27 12:07:55 -07:00
check_bindir
check-builtins.sh
check-racy.c
color.c diff: add --word-diff option that generalizes --color-words 2010-04-14 10:56:53 -07:00
color.h diff: add --word-diff option that generalizes --color-words 2010-04-14 10:56:53 -07:00
combine-diff.c Merge branch 'rs/diff-no-minimal' into maint 2010-06-21 05:38:50 -07:00
command-list.txt
commit.c make commit_tree a library function 2010-04-01 23:53:54 -07:00
commit.h Merge branch 'ar/decorate-color' 2010-06-30 11:55:40 -07:00
config.c Merge branch 'eb/core-eol' 2010-06-21 06:02:49 -07:00
config.mak.in Merge branch 'gv/portable' 2010-06-21 06:02:44 -07:00
configure.ac Merge branch 'gv/portable' 2010-06-21 06:02:44 -07:00
connect.c Merge branch 'gv/portable' 2010-06-21 06:02:44 -07:00
convert.c Merge branch 'eb/core-eol' 2010-06-21 06:02:49 -07:00
copy.c
COPYING
csum-file.c
csum-file.h
ctype.c enums: omit trailing comma for portability 2010-05-31 16:59:27 -07:00
daemon.c Rewrite dynamic structure initializations to runtime assignment 2010-05-31 16:59:26 -07:00
date.c Merge branch 'rr/parse-date-refactor' 2010-06-21 06:02:47 -07:00
decorate.c
decorate.h
delta.h
diff-delta.c
diff-lib.c Add optional parameters to the diff option "--ignore-submodules" 2010-06-11 13:33:17 -07:00
diff-no-index.c string_list: Fix argument order for string_list_insert 2010-06-27 10:06:51 -07:00
diff.c Merge branch 'jl/status-ignore-submodules' 2010-06-30 11:55:39 -07:00
diff.h Merge branch 'ab/blame-textconv' 2010-06-27 12:07:44 -07:00
diffcore-break.c Add a macro DIFF_QUEUE_CLEAR. 2010-05-07 09:34:27 -07:00
diffcore-delta.c
diffcore-order.c
diffcore-pickaxe.c Add a macro DIFF_QUEUE_CLEAR. 2010-05-07 09:34:27 -07:00
diffcore-rename.c Add a macro DIFF_QUEUE_CLEAR. 2010-05-07 09:34:27 -07:00
diffcore.h Make diffcore_std only can run once before a diff_flush 2010-05-07 09:34:28 -07:00
dir.c Merge branch 'jc/maint-simpler-common-prefix' 2010-06-22 09:45:23 -07:00
dir.h
editor.c
entry.c
environment.c Merge branch 'eb/core-eol' 2010-06-21 06:02:49 -07:00
exec_cmd.c Merge branch 'cw/maint-exec-defpath' into maint 2010-06-16 16:33:47 -07:00
exec_cmd.h
fast-import.c Merge branch 'gv/portable' 2010-06-21 06:02:44 -07:00
fetch-pack.h
fixup-builtins
fsck.c fsck: fix bogus commit header check 2010-05-28 15:08:27 -07:00
fsck.h
generate-cmdlist.sh
git-add--interactive.perl add-interactive: Clarify “remaining hunks in the file” 2010-06-13 10:05:02 -07:00
git-am.sh Merge branch 'js/maint-am-rebase-invalid-author' into maint 2010-06-28 16:18:43 -07:00
git-archimport.perl
git-bisect.sh
git-compat-util.h Merge branch 'pc/remove-warn' into maint 2010-06-22 08:30:38 -07:00
git-cvsexportcommit.perl
git-cvsimport.perl cvsimport: new -R option: generate .git/cvs-revisions mapping 2010-02-06 11:01:59 -08:00
git-cvsserver.perl Merge branch 'eb/core-eol' 2010-06-21 06:02:49 -07:00
git-difftool--helper.sh
git-difftool.perl difftool: Fix '--gui' when diff.guitool is unconfigured 2010-03-28 09:29:12 -07:00
git-filter-branch.sh Merge branch 'maint' 2010-02-11 23:06:32 -08:00
git-instaweb.sh git-instaweb: Add support for running gitweb via 'plackup' 2010-06-02 11:54:06 -07:00
git-lost-found.sh
git-merge-octopus.sh
git-merge-one-file.sh build: propagate $DIFF to scripts 2010-06-05 09:36:13 -07:00
git-merge-resolve.sh
git-mergetool--lib.sh add shebang line to git-mergetool--lib.sh 2010-01-29 09:56:51 -08:00
git-mergetool.sh
git-parse-remote.sh Do not install shell libraries executable 2010-01-31 11:53:10 -08:00
git-pull.sh pull: do nothing on --dry-run 2010-05-25 10:49:54 -07:00
git-quiltimport.sh
git-rebase--interactive.sh rebase -i: Abort cleanly if new base cannot be checked out 2010-06-11 09:01:51 -07:00
git-rebase.sh rebase: improve error message when upstream argument is missing 2010-05-31 17:53:23 -07:00
git-relink.perl
git-remote-testgit.py Remove python 2.5'isms 2010-06-13 20:02:50 -07:00
git-repack.sh
git-request-pull.sh git-request-pull.sh: remove -e switch to shell interpreter which breaks ksh 2010-06-02 09:28:12 -07:00
git-send-email.perl Merge branch 'tr/send-email-8bit' into maint 2010-06-28 16:19:03 -07:00
git-sh-setup.sh Merge branch 'gb/maint-submodule-env' into maint 2010-03-08 00:36:02 -08:00
git-stash.sh Merge branch 'cb/maint-stash-orphaned-file' 2010-05-21 04:02:23 -07:00
git-submodule.sh Merge branch 'jl/status-ignore-submodules' 2010-06-30 11:55:39 -07:00
git-svn.perl git svn: avoid unnecessary '/' in paths for SVN 2010-06-14 04:49:22 +00:00
GIT-VERSION-GEN Git 1.7.1.1 2010-06-29 09:59:56 -07:00
git-web--browse.sh git-web--browse: Add support for google chrome and chromium 2010-05-31 18:03:39 -07:00
git.c git skew: a tool to find how big a clock skew exists in the history 2011-06-30 12:21:13 -07:00
git.spec.in git.spec.in: Add gitweb subpackage 2010-06-30 15:49:18 -07:00
graph.c graph.c: register a callback for graph output 2010-05-31 18:02:07 -07:00
graph.h
grep.c grep: support NUL chars in search strings for -F 2010-05-24 11:22:07 -07:00
grep.h Merge branch 'gv/portable' 2010-06-21 06:02:44 -07:00
hash.c
hash.h
help.c Remove hyphen from "git-command" in two error messages 2010-02-15 18:20:54 -08:00
help.h
hex.c
http-backend.c Merge branch 'jp/string-list-api-cleanup' 2010-06-30 11:55:38 -07:00
http-fetch.c http: init and cleanup separately from http-walker 2010-03-02 11:10:36 -08:00
http-push.c enums: omit trailing comma for portability 2010-05-31 16:59:27 -07:00
http-walker.c Merge branch 'gv/portable' 2010-06-21 06:02:44 -07:00
http.c Merge branch 'sc/http-late-auth' into maint 2010-06-16 16:32:15 -07:00
http.h Merge branch 'sc/http-late-auth' into maint 2010-06-16 16:32:15 -07:00
ident.c
imap-send.c enums: omit trailing comma for portability 2010-05-31 16:59:27 -07:00
INSTALL
levenshtein.c
levenshtein.h Typofixes outside documentation area 2010-02-03 21:28:17 -08:00
list-objects.c
list-objects.h
ll-merge.c Rewrite dynamic structure initializations to runtime assignment 2010-05-31 16:59:26 -07:00
ll-merge.h ll_merge(): add ancestor label parameter for diff3-style output 2010-03-20 20:36:11 -07:00
lockfile.c
log-tree.c Allow customizable commit decorations colors 2010-06-24 12:57:34 -07:00
log-tree.h Allow customizable commit decorations colors 2010-06-24 12:57:34 -07:00
mailmap.c string_list: Fix argument order for string_list_lookup 2010-06-27 10:06:51 -07:00
mailmap.h
Makefile git skew: a tool to find how big a clock skew exists in the history 2011-06-30 12:21:13 -07:00
match-trees.c
merge-file.c Merge branch 'rs/diff-no-minimal' into maint 2010-06-21 05:38:50 -07:00
merge-recursive.c string_list: Fix argument order for string_list_lookup 2010-06-27 10:06:51 -07:00
merge-recursive.h Merge branch 'gv/portable' 2010-06-21 06:02:44 -07:00
name-hash.c
notes-cache.c introduce notes-cache interface 2010-04-01 23:58:30 -07:00
notes-cache.h introduce notes-cache interface 2010-04-01 23:58:30 -07:00
notes.c Merge branch 'jp/string-list-api-cleanup' 2010-06-30 11:55:38 -07:00
notes.h Merge branch 'maint' 2010-06-25 11:45:27 -07:00
object.c fix "bundle --stdin" segfault 2010-04-19 22:16:35 -07:00
object.h
pack-check.c Extract verify_pack_index for reuse from verify_pack 2010-04-19 17:56:13 -07:00
pack-refs.c
pack-refs.h
pack-revindex.c
pack-revindex.h
pack-write.c move encode_in_pack_object_header() to a better place 2010-02-23 13:10:56 -08:00
pack.h Merge branch 'sp/maint-dumb-http-pack-reidx' into maint 2010-06-16 16:21:30 -07:00
pager.c Make 'git var GIT_PAGER' always print the configured pager 2010-02-14 18:23:17 -08:00
parse-options.c parseopt: wrap rev-parse --parseopt usage for eval consumption 2010-06-13 09:38:14 -07:00
parse-options.h Merge branch 'gs/usage-to-stdout' 2010-06-21 06:02:45 -07:00
patch-delta.c Fix integer overflow in patch_delta() 2010-01-26 12:57:59 -08:00
patch-ids.c
patch-ids.h
path.c Merge branch 'mm/mkstemps-mode-for-packfiles' into maint 2010-03-08 00:36:00 -08:00
pkt-line.c
pkt-line.h
preload-index.c Make ce_uptodate() trustworthy again 2010-01-24 00:15:29 -08:00
pretty.c Merge branch 'mg/pretty-magic-space' 2010-06-22 09:45:22 -07:00
progress.c
progress.h
quote.c quote.c: separate quoting and relative path generation 2010-06-05 09:14:13 -07:00
quote.h quote.c: separate quoting and relative path generation 2010-06-05 09:14:13 -07:00
reachable.c
reachable.h
read-cache.c Correct spelling of 'REUC' extension 2010-02-02 09:54:34 -08:00
README
reflog-walk.c string_list: Fix argument order for string_list_lookup 2010-06-27 10:06:51 -07:00
reflog-walk.h
refs.c Merge branch 'gv/portable' 2010-06-21 06:02:44 -07:00
refs.h log_ref_setup: don't return stack-allocated array 2010-06-12 09:34:17 -07:00
RelNotes Prepare draft release notes to 1.7.1.1 2010-06-16 17:00:53 -07:00
remote-curl.c Merge branch 'sc/http-late-auth' into maint 2010-06-16 16:32:15 -07:00
remote.c Merge branch 'jp/string-list-api-cleanup' 2010-06-30 11:55:38 -07:00
remote.h enums: omit trailing comma for portability 2010-05-31 16:59:27 -07:00
replace_object.c
rerere.c Merge branch 'jp/string-list-api-cleanup' 2010-06-30 11:55:38 -07:00
rerere.h
resolve-undo.c string_list: Fix argument order for string_list_lookup 2010-06-27 10:06:51 -07:00
resolve-undo.h build: make code "-Wpointer-arith" clean 2010-02-01 22:04:03 -08:00
revision.c Merge branch 'jp/string-list-api-cleanup' 2010-06-30 11:55:38 -07:00
revision.h Merge branch 'tr/rev-list-count' 2010-06-30 11:55:38 -07:00
run-command.c Merge branch 'js/async-thread' 2010-06-21 06:02:45 -07:00
run-command.h Enable threaded async procedures whenever pthreads is available 2010-03-10 14:26:54 -08:00
send-pack.h git-push: make git push --porcelain print "Done" 2010-02-28 10:39:30 -08:00
server-info.c
setup.c Merge branch 'maint' 2010-06-06 18:42:12 -07:00
sha1_file.c Merge branch 'jk/maint-sha1-file-name-fix' into maint 2010-06-21 05:40:41 -07:00
sha1_name.c Merge branch 'cp/textconv-cat-file' 2010-06-27 12:07:55 -07:00
sha1-lookup.c
sha1-lookup.h
shallow.c
shell.c
shortlog.h pretty: Respect --abbrev option 2010-05-04 15:38:58 -07:00
show-index.c
sideband.c
sideband.h
sigchain.c
sigchain.h
strbuf.c
strbuf.h
string-list.c string_list: Fix argument order for string_list_append 2010-06-27 10:06:52 -07:00
string-list.h string_list: Fix argument order for string_list_append 2010-06-27 10:06:52 -07:00
submodule.c Add the option "--ignore-submodules" to "git status" 2010-06-25 11:30:25 -07:00
submodule.h Add the option "--ignore-submodules" to "git status" 2010-06-25 11:30:25 -07:00
symlinks.c
tag.c tag.c: Parse tagger date (if present) 2010-04-12 21:45:17 -07:00
tag.h tag.c: Parse tagger date (if present) 2010-04-12 21:45:17 -07:00
tar.h
test-chmtime.c Typofixes outside documentation area 2010-02-03 21:28:17 -08:00
test-ctype.c
test-date.c refactor test-date interface 2009-08-30 22:04:46 -07:00
test-delta.c
test-dump-cache-tree.c
test-genrandom.c
test-index-version.c
test-match-trees.c
test-parse-options.c
test-path-utils.c
test-run-command.c
test-sha1.c
test-sha1.sh
test-sigchain.c
thread-utils.c Thread-safe xmalloc and xrealloc needs a recursive mutex 2010-04-08 23:06:39 -07:00
thread-utils.h Thread-safe xmalloc and xrealloc needs a recursive mutex 2010-04-08 23:06:39 -07:00
trace.c Do not call release_pack_memory in malloc wrappers when GIT_TRACE is used 2010-05-08 22:28:01 -07:00
transport-helper.c string_list: Fix argument order for string_list_append 2010-06-27 10:06:52 -07:00
transport.c make url-related functions reusable 2010-05-24 16:48:32 -07:00
transport.h Merge branch 'tc/transport-verbosity' 2010-03-15 00:58:42 -07:00
tree-diff.c Make git log --follow find copies among unmodified files. 2010-05-07 09:34:29 -07:00
tree-walk.c Merge branch 'maint-1.6.6' into maint 2010-02-14 18:59:14 -08:00
tree-walk.h
tree.c
tree.h
unimplemented.sh
unpack-trees.c Merge branch 'bd/maint-unpack-trees-parawalk-fix' into maint 2010-06-28 16:18:02 -07:00
unpack-trees.h Merge branch 'jc/fix-tree-walk' 2010-01-24 17:35:58 -08:00
upload-pack.c run-command: support custom fd-set in async 2010-02-05 20:57:22 -08:00
url.c url_decode: URL scheme ends with a colon and does not require a slash 2010-06-24 13:36:30 -07:00
url.h make url-related functions reusable 2010-05-24 16:48:32 -07:00
usage.c Make report() from usage.c public as vreportf() and use it. 2010-03-07 00:37:35 -08:00
userdiff.c Merge branch 'bs/userdiff-php' 2010-06-13 11:22:05 -07:00
userdiff.h diff: cache textconv output 2010-04-02 00:05:31 -07:00
utf8.c Merge branch 'rs/optim-text-wrap' into maint 2010-03-04 22:26:33 -08:00
utf8.h Merge branch 'rs/optim-text-wrap' into maint 2010-03-04 22:26:33 -08:00
walker.c
walker.h http: init and cleanup separately from http-walker 2010-03-02 11:10:36 -08:00
wrap-for-bin.sh wrap-for-bin: do not export an empty GIT_TEMPLATE_DIR 2010-03-02 16:27:03 -08:00
wrapper.c Merge branch 'pc/remove-warn' into maint 2010-06-22 08:30:38 -07:00
write_or_die.c
ws.c whitespace: add tab-in-indent support for --whitespace=fix 2010-04-04 14:21:54 -07:00
wt-status.c Merge branch 'jl/status-ignore-submodules' 2010-06-30 11:55:39 -07:00
wt-status.h Merge branch 'jl/status-ignore-submodules' 2010-06-30 11:55:39 -07:00
xdiff-interface.c Merge branch 'maint-1.7.0' into maint 2010-05-04 15:20:47 -07:00
xdiff-interface.h Merge branch 'maint-1.7.0' into maint 2010-05-04 15:20:47 -07:00

README 

////////////////////////////////////////////////////////////////

	GIT - the stupid content tracker

////////////////////////////////////////////////////////////////

"git" can mean anything, depending on your mood.

 - random three-letter combination that is pronounceable, and not
   actually used by any common UNIX command.  The fact that it is a
   mispronunciation of "get" may or may not be relevant.
 - stupid. contemptible and despicable. simple. Take your pick from the
   dictionary of slang.
 - "global information tracker": you're in a good mood, and it actually
   works for you. Angels sing, and a light suddenly fills the room.
 - "goddamn idiotic truckload of sh*t": when it breaks

Git is a fast, scalable, distributed revision control system with an
unusually rich command set that provides both high-level operations
and full access to internals.

Git is an Open Source project covered by the GNU General Public License.
It was originally written by Linus Torvalds with help of a group of
hackers around the net. It is currently maintained by Junio C Hamano.

Please read the file INSTALL for installation instructions.

See Documentation/gittutorial.txt to get started, then see
Documentation/everyday.txt for a useful minimum set of commands, and
Documentation/git-commandname.txt for documentation of each command.
If git has been correctly installed, then the tutorial can also be
read with "man gittutorial" or "git help tutorial", and the
documentation of each command with "man git-commandname" or "git help
commandname".

CVS users may also want to read Documentation/gitcvs-migration.txt
("man gitcvs-migration" or "git help cvs-migration" if git is
installed).

Many Git online resources are accessible from http://git-scm.com/
including full documentation and Git related tools.

The user discussion and development of Git take place on the Git
mailing list -- everyone is welcome to post bug reports, feature
requests, comments and patches to git@vger.kernel.org. To subscribe
to the list, send an email with just "subscribe git" in the body to
majordomo@vger.kernel.org. The mailing list archives are available at
http://marc.theaimsgroup.com/?l=git and other archival sites.

The messages titled "A note from the maintainer", "What's in
git.git (stable)" and "What's cooking in git.git (topics)" and
the discussion following them on the mailing list give a good
reference for project status, development direction and
remaining tasks.