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406 git-patch-id(
1) Manual Page
409 <div class=
"sectionbody">
411 Compute unique ID for a patch
415 <h2 id=
"_synopsis">SYNOPSIS
</h2>
416 <div class=
"sectionbody">
417 <div class=
"paragraph"><p><em>git patch-id
</em> < <patch
></p></div>
419 <h2 id=
"_description">DESCRIPTION
</h2>
420 <div class=
"sectionbody">
421 <div class=
"paragraph"><p>A
"patch ID" is nothing but a SHA1 of the diff associated with a patch, with
422 whitespace and line numbers ignored. As such, it
’s
"reasonably stable", but at
423 the same time also reasonably unique, i.e., two patches that have the same
"patch
424 ID" are almost guaranteed to be the same thing.
</p></div>
425 <div class=
"paragraph"><p>IOW, you can use this thing to look for likely duplicate commits.
</p></div>
426 <div class=
"paragraph"><p>When dealing with
<em>git diff-tree
</em> output, it takes advantage of
427 the fact that the patch is prefixed with the object name of the
428 commit, and outputs two
40-byte hexadecimal strings. The first
429 string is the patch ID, and the second string is the commit ID.
430 This can be used to make a mapping from patch ID to commit ID.
</p></div>
432 <h2 id=
"_options">OPTIONS
</h2>
433 <div class=
"sectionbody">
434 <div class=
"dlist"><dl>
440 The diff to create the ID of.
445 <h2 id=
"_author">Author
</h2>
446 <div class=
"sectionbody">
447 <div class=
"paragraph"><p>Written by Linus Torvalds
<<a href=
"mailto:torvalds@osdl.org">torvalds@osdl.org
</a>></p></div>
449 <h2 id=
"_documentation">Documentation
</h2>
450 <div class=
"sectionbody">
451 <div class=
"paragraph"><p>Documentation by Junio C Hamano and the git-list
<<a href=
"mailto:git@vger.kernel.org">git@vger.kernel.org
</a>>.
</p></div>
453 <h2 id=
"_git">GIT
</h2>
454 <div class=
"sectionbody">
455 <div class=
"paragraph"><p>Part of the
<a href=
"git.html">git(
1)
</a> suite
</p></div>
458 <div id=
"footer-text">
459 Last updated
2010-
01-
21 17:
44:
19 UTC