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573 git-receive-pack(
1) Manual Page
576 <div class=
"sectionbody">
577 <p>git-receive-pack -
578 Receive what is pushed into the repository
583 <h2 id=
"_synopsis">SYNOPSIS
</h2>
584 <div class=
"sectionbody">
585 <div class=
"verseblock">
586 <div class=
"verseblock-content"><em>git-receive-pack
</em> <directory
></div>
587 <div class=
"verseblock-attribution">
590 <h2 id=
"_description">DESCRIPTION
</h2>
591 <div class=
"sectionbody">
592 <div class=
"paragraph"><p>Invoked by
<em>git send-pack
</em> and updates the repository with the
593 information fed from the remote end.
</p></div>
594 <div class=
"paragraph"><p>This command is usually not invoked directly by the end user.
595 The UI for the protocol is on the
<em>git send-pack
</em> side, and the
596 program pair is meant to be used to push updates to remote
597 repository. For pull operations, see
<a href=
"git-fetch-pack.html">git-fetch-pack(
1)
</a>.
</p></div>
598 <div class=
"paragraph"><p>The command allows for creation and fast-forwarding of sha1 refs
599 (heads/tags) on the remote end (strictly speaking, it is the
600 local end
<em>git-receive-pack
</em> runs, but to the user who is sitting at
601 the send-pack end, it is updating the remote. Confused?)
</p></div>
602 <div class=
"paragraph"><p>There are other real-world examples of using update and
603 post-update hooks found in the Documentation/howto directory.
</p></div>
604 <div class=
"paragraph"><p><em>git-receive-pack
</em> honours the receive.denyNonFastForwards config
605 option, which tells it if updates to a ref should be denied if they
606 are not fast-forwards.
</p></div>
608 <h2 id=
"_options">OPTIONS
</h2>
609 <div class=
"sectionbody">
610 <div class=
"dlist"><dl>
616 The repository to sync into.
621 <h2 id=
"_pre_receive_hook">pre-receive Hook
</h2>
622 <div class=
"sectionbody">
623 <div class=
"paragraph"><p>Before any ref is updated, if $GIT_DIR/hooks/pre-receive file exists
624 and is executable, it will be invoked once with no parameters. The
625 standard input of the hook will be one line per ref to be updated:
</p></div>
626 <div class=
"literalblock">
627 <div class=
"content">
628 <pre><tt>sha1-old SP sha1-new SP refname LF
</tt></pre>
630 <div class=
"paragraph"><p>The refname value is relative to $GIT_DIR; e.g. for the master
631 head this is
"refs/heads/master". The two sha1 values before
632 each refname are the object names for the refname before and after
633 the update. Refs to be created will have sha1-old equal to
0{
40},
634 while refs to be deleted will have sha1-new equal to
0{
40}, otherwise
635 sha1-old and sha1-new should be valid objects in the repository.
</p></div>
636 <div class=
"paragraph"><p>This hook is called before any refname is updated and before any
637 fast-forward checks are performed.
</p></div>
638 <div class=
"paragraph"><p>If the pre-receive hook exits with a non-zero exit status no updates
639 will be performed, and the update, post-receive and post-update
640 hooks will not be invoked either. This can be useful to quickly
641 bail out if the update is not to be supported.
</p></div>
643 <h2 id=
"_update_hook">update Hook
</h2>
644 <div class=
"sectionbody">
645 <div class=
"paragraph"><p>Before each ref is updated, if $GIT_DIR/hooks/update file exists
646 and is executable, it is invoked once per ref, with three parameters:
</p></div>
647 <div class=
"literalblock">
648 <div class=
"content">
649 <pre><tt>$GIT_DIR/hooks/update refname sha1-old sha1-new
</tt></pre>
651 <div class=
"paragraph"><p>The refname parameter is relative to $GIT_DIR; e.g. for the master
652 head this is
"refs/heads/master". The two sha1 arguments are
653 the object names for the refname before and after the update.
654 Note that the hook is called before the refname is updated,
655 so either sha1-old is
0{
40} (meaning there is no such ref yet),
656 or it should match what is recorded in refname.
</p></div>
657 <div class=
"paragraph"><p>The hook should exit with non-zero status if it wants to disallow
658 updating the named ref. Otherwise it should exit with zero.
</p></div>
659 <div class=
"paragraph"><p>Successful execution (a zero exit status) of this hook does not
660 ensure the ref will actually be updated, it is only a prerequisite.
661 As such it is not a good idea to send notices (e.g. email) from
662 this hook. Consider using the post-receive hook instead.
</p></div>
664 <h2 id=
"_post_receive_hook">post-receive Hook
</h2>
665 <div class=
"sectionbody">
666 <div class=
"paragraph"><p>After all refs were updated (or attempted to be updated), if any
667 ref update was successful, and if $GIT_DIR/hooks/post-receive
668 file exists and is executable, it will be invoked once with no
669 parameters. The standard input of the hook will be one line
670 for each successfully updated ref:
</p></div>
671 <div class=
"literalblock">
672 <div class=
"content">
673 <pre><tt>sha1-old SP sha1-new SP refname LF
</tt></pre>
675 <div class=
"paragraph"><p>The refname value is relative to $GIT_DIR; e.g. for the master
676 head this is
"refs/heads/master". The two sha1 values before
677 each refname are the object names for the refname before and after
678 the update. Refs that were created will have sha1-old equal to
679 0{
40}, while refs that were deleted will have sha1-new equal to
680 0{
40}, otherwise sha1-old and sha1-new should be valid objects in
681 the repository.
</p></div>
682 <div class=
"paragraph"><p>Using this hook, it is easy to generate mails describing the updates
683 to the repository. This example script sends one mail message per
684 ref listing the commits pushed to the repository:
</p></div>
685 <div class=
"literalblock">
686 <div class=
"content">
688 # mail out commit update information.
689 while read oval nval ref
691 if expr
"$oval" : '
0*$'
>/dev/null
693 echo
"Created a new ref, with the following commits:"
694 git rev-list --pretty
"$nval"
697 git rev-list --pretty
"$nval" "^$oval"
699 mail -s
"Changes to ref $ref" commit-list@mydomain
703 <div class=
"paragraph"><p>The exit code from this hook invocation is ignored, however a
704 non-zero exit code will generate an error message.
</p></div>
705 <div class=
"paragraph"><p>Note that it is possible for refname to not have sha1-new when this
706 hook runs. This can easily occur if another user modifies the ref
707 after it was updated by
<em>git-receive-pack
</em>, but before the hook was able
708 to evaluate it. It is recommended that hooks rely on sha1-new
709 rather than the current value of refname.
</p></div>
711 <h2 id=
"_post_update_hook">post-update Hook
</h2>
712 <div class=
"sectionbody">
713 <div class=
"paragraph"><p>After all other processing, if at least one ref was updated, and
714 if $GIT_DIR/hooks/post-update file exists and is executable, then
715 post-update will be called with the list of refs that have been updated.
716 This can be used to implement any repository wide cleanup tasks.
</p></div>
717 <div class=
"paragraph"><p>The exit code from this hook invocation is ignored; the only thing
718 left for
<em>git-receive-pack
</em> to do at that point is to exit itself
720 <div class=
"paragraph"><p>This hook can be used, for example, to run
<tt>git update-server-info
</tt>
721 if the repository is packed and is served via a dumb transport.
</p></div>
722 <div class=
"literalblock">
723 <div class=
"content">
725 exec git update-server-info
</tt></pre>
728 <h2 id=
"_see_also">SEE ALSO
</h2>
729 <div class=
"sectionbody">
730 <div class=
"paragraph"><p><a href=
"git-send-pack.html">git-send-pack(
1)
</a>,
<a href=
"gitnamespaces.html">gitnamespaces(
7)
</a></p></div>
732 <h2 id=
"_git">GIT
</h2>
733 <div class=
"sectionbody">
734 <div class=
"paragraph"><p>Part of the
<a href=
"git.html">git(
1)
</a> suite
</p></div>
737 <div id=
"footnotes"><hr /></div>
739 <div id=
"footer-text">
740 Last updated
2011-
09-
21 23:
01:
14 PDT