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403 <body>
404 <div id="header">
405 <h1>
406 git-receive-pack(1) Manual Page
407 </h1>
408 <h2>NAME</h2>
409 <div class="sectionbody">
410 <p>git-receive-pack -
411 Receive what is pushed into the repository
412 </p>
413 </div>
414 </div>
415 <h2 id="_synopsis">SYNOPSIS</h2>
416 <div class="sectionbody">
417 <div class="verseblock">
418 <div class="verseblock-content"><em>git-receive-pack</em> &lt;directory&gt;</div>
419 <div class="verseblock-attribution">
420 </div></div>
421 </div>
422 <h2 id="_description">DESCRIPTION</h2>
423 <div class="sectionbody">
424 <div class="paragraph"><p>Invoked by <em>git send-pack</em> and updates the repository with the
425 information fed from the remote end.</p></div>
426 <div class="paragraph"><p>This command is usually not invoked directly by the end user.
427 The UI for the protocol is on the <em>git send-pack</em> side, and the
428 program pair is meant to be used to push updates to remote
429 repository. For pull operations, see <a href="git-fetch-pack.html">git-fetch-pack(1)</a>.</p></div>
430 <div class="paragraph"><p>The command allows for creation and fast-forwarding of sha1 refs
431 (heads/tags) on the remote end (strictly speaking, it is the
432 local end <em>git-receive-pack</em> runs, but to the user who is sitting at
433 the send-pack end, it is updating the remote. Confused?)</p></div>
434 <div class="paragraph"><p>There are other real-world examples of using update and
435 post-update hooks found in the Documentation/howto directory.</p></div>
436 <div class="paragraph"><p><em>git-receive-pack</em> honours the receive.denyNonFastForwards config
437 option, which tells it if updates to a ref should be denied if they
438 are not fast-forwards.</p></div>
439 </div>
440 <h2 id="_options">OPTIONS</h2>
441 <div class="sectionbody">
442 <div class="dlist"><dl>
443 <dt class="hdlist1">
444 &lt;directory&gt;
445 </dt>
446 <dd>
448 The repository to sync into.
449 </p>
450 </dd>
451 </dl></div>
452 </div>
453 <h2 id="_pre_receive_hook">pre-receive Hook</h2>
454 <div class="sectionbody">
455 <div class="paragraph"><p>Before any ref is updated, if $GIT_DIR/hooks/pre-receive file exists
456 and is executable, it will be invoked once with no parameters. The
457 standard input of the hook will be one line per ref to be updated:</p></div>
458 <div class="literalblock">
459 <div class="content">
460 <pre><tt>sha1-old SP sha1-new SP refname LF</tt></pre>
461 </div></div>
462 <div class="paragraph"><p>The refname value is relative to $GIT_DIR; e.g. for the master
463 head this is "refs/heads/master". The two sha1 values before
464 each refname are the object names for the refname before and after
465 the update. Refs to be created will have sha1-old equal to 0{40},
466 while refs to be deleted will have sha1-new equal to 0{40}, otherwise
467 sha1-old and sha1-new should be valid objects in the repository.</p></div>
468 <div class="paragraph"><p>This hook is called before any refname is updated and before any
469 fast-forward checks are performed.</p></div>
470 <div class="paragraph"><p>If the pre-receive hook exits with a non-zero exit status no updates
471 will be performed, and the update, post-receive and post-update
472 hooks will not be invoked either. This can be useful to quickly
473 bail out if the update is not to be supported.</p></div>
474 </div>
475 <h2 id="_update_hook">update Hook</h2>
476 <div class="sectionbody">
477 <div class="paragraph"><p>Before each ref is updated, if $GIT_DIR/hooks/update file exists
478 and is executable, it is invoked once per ref, with three parameters:</p></div>
479 <div class="literalblock">
480 <div class="content">
481 <pre><tt>$GIT_DIR/hooks/update refname sha1-old sha1-new</tt></pre>
482 </div></div>
483 <div class="paragraph"><p>The refname parameter is relative to $GIT_DIR; e.g. for the master
484 head this is "refs/heads/master". The two sha1 arguments are
485 the object names for the refname before and after the update.
486 Note that the hook is called before the refname is updated,
487 so either sha1-old is 0{40} (meaning there is no such ref yet),
488 or it should match what is recorded in refname.</p></div>
489 <div class="paragraph"><p>The hook should exit with non-zero status if it wants to disallow
490 updating the named ref. Otherwise it should exit with zero.</p></div>
491 <div class="paragraph"><p>Successful execution (a zero exit status) of this hook does not
492 ensure the ref will actually be updated, it is only a prerequisite.
493 As such it is not a good idea to send notices (e.g. email) from
494 this hook. Consider using the post-receive hook instead.</p></div>
495 </div>
496 <h2 id="_post_receive_hook">post-receive Hook</h2>
497 <div class="sectionbody">
498 <div class="paragraph"><p>After all refs were updated (or attempted to be updated), if any
499 ref update was successful, and if $GIT_DIR/hooks/post-receive
500 file exists and is executable, it will be invoked once with no
501 parameters. The standard input of the hook will be one line
502 for each successfully updated ref:</p></div>
503 <div class="literalblock">
504 <div class="content">
505 <pre><tt>sha1-old SP sha1-new SP refname LF</tt></pre>
506 </div></div>
507 <div class="paragraph"><p>The refname value is relative to $GIT_DIR; e.g. for the master
508 head this is "refs/heads/master". The two sha1 values before
509 each refname are the object names for the refname before and after
510 the update. Refs that were created will have sha1-old equal to
511 0{40}, while refs that were deleted will have sha1-new equal to
512 0{40}, otherwise sha1-old and sha1-new should be valid objects in
513 the repository.</p></div>
514 <div class="paragraph"><p>Using this hook, it is easy to generate mails describing the updates
515 to the repository. This example script sends one mail message per
516 ref listing the commits pushed to the repository:</p></div>
517 <div class="literalblock">
518 <div class="content">
519 <pre><tt>#!/bin/sh
520 # mail out commit update information.
521 while read oval nval ref
523 if expr "$oval" : '0*$' &gt;/dev/null
524 then
525 echo "Created a new ref, with the following commits:"
526 git rev-list --pretty "$nval"
527 else
528 echo "New commits:"
529 git rev-list --pretty "$nval" "^$oval"
530 fi |
531 mail -s "Changes to ref $ref" commit-list@mydomain
532 done
533 exit 0</tt></pre>
534 </div></div>
535 <div class="paragraph"><p>The exit code from this hook invocation is ignored, however a
536 non-zero exit code will generate an error message.</p></div>
537 <div class="paragraph"><p>Note that it is possible for refname to not have sha1-new when this
538 hook runs. This can easily occur if another user modifies the ref
539 after it was updated by <em>git-receive-pack</em>, but before the hook was able
540 to evaluate it. It is recommended that hooks rely on sha1-new
541 rather than the current value of refname.</p></div>
542 </div>
543 <h2 id="_post_update_hook">post-update Hook</h2>
544 <div class="sectionbody">
545 <div class="paragraph"><p>After all other processing, if at least one ref was updated, and
546 if $GIT_DIR/hooks/post-update file exists and is executable, then
547 post-update will be called with the list of refs that have been updated.
548 This can be used to implement any repository wide cleanup tasks.</p></div>
549 <div class="paragraph"><p>The exit code from this hook invocation is ignored; the only thing
550 left for <em>git-receive-pack</em> to do at that point is to exit itself
551 anyway.</p></div>
552 <div class="paragraph"><p>This hook can be used, for example, to run <tt>git update-server-info</tt>
553 if the repository is packed and is served via a dumb transport.</p></div>
554 <div class="literalblock">
555 <div class="content">
556 <pre><tt>#!/bin/sh
557 exec git update-server-info</tt></pre>
558 </div></div>
559 </div>
560 <h2 id="_see_also">SEE ALSO</h2>
561 <div class="sectionbody">
562 <div class="paragraph"><p><a href="git-send-pack.html">git-send-pack(1)</a></p></div>
563 </div>
564 <h2 id="_git">GIT</h2>
565 <div class="sectionbody">
566 <div class="paragraph"><p>Part of the <a href="git.html">git(1)</a> suite</p></div>
567 </div>
568 <div id="footer">
569 <div id="footer-text">
570 Last updated 2011-07-23 00:49:30 UTC
571 </div>
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