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chromium / external / gitster / git-htmldocs / c27b733bfcf3bef4722ef8d46334aff3e15e0cd2 / . / git-reflog.html
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Junio C Hamano74640642006-12-27 10:59:55[diff] [blame]306</style>
307<title>git-reflog(1)</title>
308</head>
309<body>
310<div id="header">
311<h1>
312git-reflog(1) Manual Page
313</h1>
314<h2>NAME</h2>
315<div class="sectionbody">
316<p>git-reflog -
317 Manage reflog information
318</p>
319</div>
320</div>
321<h2>SYNOPSIS</h2>
322<div class="sectionbody">
Junio C Hamanoba4b9282008-07-06 05:20:31[diff] [blame]323<div class="para"><p><em>git reflog</em> &lt;subcommand&gt; &lt;options&gt;</p></div>
Junio C Hamano74640642006-12-27 10:59:55[diff] [blame]324</div>
Junio C Hamanoba4b9282008-07-06 05:20:31[diff] [blame]325<h2 id="_description">DESCRIPTION</h2>
Junio C Hamano74640642006-12-27 10:59:55[diff] [blame]326<div class="sectionbody">
Junio C Hamanoba4b9282008-07-06 05:20:31[diff] [blame]327<div class="para"><p>The command takes various subcommands, and different options
328depending on the subcommand:</p></div>
Junio C Hamanod3339982007-02-09 08:38:48[diff] [blame]329<div class="verseblock">
Junio C Hamanoba4b9282008-07-06 05:20:31[diff] [blame]330<div class="content"><em>git reflog expire</em> [--dry-run] [--stale-fix] [--verbose]
Junio C Hamano9ccf6642010-03-22 01:47:35[diff] [blame]331 [--expire=&lt;time&gt;] [--expire-unreachable=&lt;time&gt;] [--all] &lt;refs&gt;&#8230;
332<em>git reflog delete</em> ref@{specifier}&#8230;
333<em>git reflog</em> [<em>show</em>] [log-options] [&lt;ref&gt;]</div></div>
Junio C Hamanoba4b9282008-07-06 05:20:31[diff] [blame]334<div class="para"><p>Reflog is a mechanism to record when the tip of branches are
335updated. This command is to manage the information recorded in it.</p></div>
336<div class="para"><p>The subcommand "expire" is used to prune older reflog entries.
Junio C Hamano74640642006-12-27 10:59:55[diff] [blame]337Entries older than <tt>expire</tt> time, or entries older than
Junio C Hamano54bf1e22008-12-20 06:30:11[diff] [blame]338<tt>expire-unreachable</tt> time and not reachable from the current
Junio C Hamano74640642006-12-27 10:59:55[diff] [blame]339tip, are removed from the reflog. This is typically not used
Junio C Hamanoba4b9282008-07-06 05:20:31[diff] [blame]340directly by the end users &#8212; instead, see <a href="git-gc.html">git-gc(1)</a>.</p></div>
341<div class="para"><p>The subcommand "show" (which is also the default, in the absence of any
Junio C Hamanod3339982007-02-09 08:38:48[diff] [blame]342subcommands) will take all the normal log options, and show the log of
Junio C Hamano2e72a942007-11-21 08:54:42[diff] [blame]343the reference provided in the command-line (or <tt>HEAD</tt>, by default).
344The reflog will cover all recent actions (HEAD reflog records branch switching
Junio C Hamanoba4b9282008-07-06 05:20:31[diff] [blame]345as well). It is an alias for <tt>git log -g --abbrev-commit --pretty=oneline</tt>;
346see <a href="git-log.html">git-log(1)</a>.</p></div>
347<div class="para"><p>The reflog is useful in various git commands, to specify the old value
Junio C Hamano2e72a942007-11-21 08:54:42[diff] [blame]348of a reference. For example, <tt>HEAD@{2}</tt> means "where HEAD used to be
349two moves ago", <tt>master@{one.week.ago}</tt> means "where master used to
Junio C Hamanoc27b7332010-10-14 04:37:28[diff] [blame^]350point to one week ago", and so on. See <a href="gitrevisions.html">gitrevisions(7)</a> for
Junio C Hamanoba4b9282008-07-06 05:20:31[diff] [blame]351more details.</p></div>
352<div class="para"><p>To delete single entries from the reflog, use the subcommand "delete"
Junio C Hamano4604fe52008-09-19 06:37:10[diff] [blame]353and specify the _exact_ entry (e.g. "<tt>git reflog delete master@{2}</tt>").</p></div>
Junio C Hamano74640642006-12-27 10:59:55[diff] [blame]354</div>
Junio C Hamanoba4b9282008-07-06 05:20:31[diff] [blame]355<h2 id="_options">OPTIONS</h2>
Junio C Hamano74640642006-12-27 10:59:55[diff] [blame]356<div class="sectionbody">
Junio C Hamanoba4b9282008-07-06 05:20:31[diff] [blame]357<div class="vlist"><dl>
Junio C Hamano74640642006-12-27 10:59:55[diff] [blame]358<dt>
Junio C Hamanoee695f22007-06-21 00:35:36[diff] [blame]359--stale-fix
360</dt>
361<dd>
362<p>
363 This revamps the logic &#8212; the definition of "broken commit"
364 becomes: a commit that is not reachable from any of the refs and
365 there is a missing object among the commit, tree, or blob
366 objects reachable from it that is not reachable from any of the
367 refs.
368</p>
Junio C Hamanoba4b9282008-07-06 05:20:31[diff] [blame]369<div class="para"><p>This computation involves traversing all the reachable objects, i.e. it
Junio C Hamano1aa40d22010-01-21 17:46:43[diff] [blame]370has the same cost as <em>git prune</em>. Fortunately, once this is run, we
Junio C Hamanoee695f22007-06-21 00:35:36[diff] [blame]371should not have to ever worry about missing objects, because the current
372prune and pack-objects know about reflogs and protect objects referred by
Junio C Hamanoba4b9282008-07-06 05:20:31[diff] [blame]373them.</p></div>
Junio C Hamanoee695f22007-06-21 00:35:36[diff] [blame]374</dd>
375<dt>
Junio C Hamano74640642006-12-27 10:59:55[diff] [blame]376--expire=&lt;time&gt;
377</dt>
378<dd>
379<p>
380 Entries older than this time are pruned. Without the
381 option it is taken from configuration <tt>gc.reflogExpire</tt>,
382 which in turn defaults to 90 days.
383</p>
384</dd>
385<dt>
386--expire-unreachable=&lt;time&gt;
387</dt>
388<dd>
389<p>
Junio C Hamano54bf1e22008-12-20 06:30:11[diff] [blame]390 Entries older than this time and not reachable from
Junio C Hamano74640642006-12-27 10:59:55[diff] [blame]391 the current tip of the branch are pruned. Without the
392 option it is taken from configuration
393 <tt>gc.reflogExpireUnreachable</tt>, which in turn defaults to
394 30 days.
395</p>
396</dd>
397<dt>
398--all
399</dt>
400<dd>
401<p>
402 Instead of listing &lt;refs&gt; explicitly, prune all refs.
403</p>
404</dd>
Junio C Hamano764a6672007-10-23 01:23:31[diff] [blame]405<dt>
Junio C Hamano86bcccc2008-03-08 09:33:55[diff] [blame]406--updateref
407</dt>
408<dd>
409<p>
410 Update the ref with the sha1 of the top reflog entry (i.e.
411 &lt;ref&gt;@{0}) after expiring or deleting.
412</p>
413</dd>
414<dt>
415--rewrite
416</dt>
417<dd>
418<p>
419 While expiring or deleting, adjust each reflog entry to ensure
420 that the <tt>old</tt> sha1 field points to the <tt>new</tt> sha1 field of the
421 previous entry.
422</p>
423</dd>
424<dt>
Junio C Hamano764a6672007-10-23 01:23:31[diff] [blame]425--verbose
426</dt>
427<dd>
428<p>
429 Print extra information on screen.
430</p>
431</dd>
Junio C Hamanoba4b9282008-07-06 05:20:31[diff] [blame]432</dl></div>
Junio C Hamano74640642006-12-27 10:59:55[diff] [blame]433</div>
Junio C Hamanoba4b9282008-07-06 05:20:31[diff] [blame]434<h2 id="_author">Author</h2>
Junio C Hamano74640642006-12-27 10:59:55[diff] [blame]435<div class="sectionbody">
Junio C Hamano0868a302008-07-22 09:20:44[diff] [blame]436<div class="para"><p>Written by Junio C Hamano &lt;gitster@pobox.com&gt;</p></div>
Junio C Hamano74640642006-12-27 10:59:55[diff] [blame]437</div>
Junio C Hamanoba4b9282008-07-06 05:20:31[diff] [blame]438<h2 id="_documentation">Documentation</h2>
Junio C Hamano74640642006-12-27 10:59:55[diff] [blame]439<div class="sectionbody">
Junio C Hamanoba4b9282008-07-06 05:20:31[diff] [blame]440<div class="para"><p>Documentation by Junio C Hamano and the git-list &lt;git@vger.kernel.org&gt;.</p></div>
Junio C Hamano74640642006-12-27 10:59:55[diff] [blame]441</div>
Junio C Hamanoba4b9282008-07-06 05:20:31[diff] [blame]442<h2 id="_git">GIT</h2>
Junio C Hamano74640642006-12-27 10:59:55[diff] [blame]443<div class="sectionbody">
Junio C Hamanoba4b9282008-07-06 05:20:31[diff] [blame]444<div class="para"><p>Part of the <a href="git.html">git(1)</a> suite</p></div>
Junio C Hamano74640642006-12-27 10:59:55[diff] [blame]445</div>
446<div id="footer">
447<div id="footer-text">
Junio C Hamanoc27b7332010-10-14 04:37:28[diff] [blame^]448Last updated 2010-10-14 04:35:18 UTC
Junio C Hamano74640642006-12-27 10:59:55[diff] [blame]449</div>
450</div>
451</body>
452</html>