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| author | Junio C Hamano <junio@hera.kernel.org> | 2005-12-27 00:17:23 -0800 |
|---|---|---|
| committer | Junio C Hamano <junio@hera.kernel.org> | 2005-12-27 00:17:23 -0800 |
| commit | 1a4e841b439ba014b365999c3a6b9e2be3740bd8 (patch) | |
| tree | 263dbc68b55d73929f82a6d1f7df677dfb06e294 /git-rev-parse.html | |
| download | git-htmldocs-1a4e841b439ba014b365999c3a6b9e2be3740bd8.tar.gz | |
Autogenerated HTML docs for 36de72aa9dc3b7daf8cf2770c840f39bb0d2ae70
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+</style>
+<title>git-rev-parse(1)</title>
+</head>
+<body>
+<div id="header">
+<h1>
+git-rev-parse(1) Manual Page
+</h1>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>git-rev-parse -
+ Pick out and massage parameters.
+</p>
+</div>
+</div>
+<h2>SYNOPSIS</h2>
+<div class="sectionbody">
+<p><em>git-rev-parse</em> [ --option ] <args>…</p>
+</div>
+<h2>DESCRIPTION</h2>
+<div class="sectionbody">
+<p>Many git Porcelainish commands take mixture of flags
+(i.e. parameters that begin with a dash <em>-</em>) and parameters
+meant for underlying <tt>git-rev-list</tt> command they use internally
+and flags and parameters for other commands they use as the
+downstream of <tt>git-rev-list</tt>. This command is used to
+distinguish between them.</p>
+</div>
+<h2>OPTIONS</h2>
+<div class="sectionbody">
+<dl>
+<dt>
+--revs-only
+</dt>
+<dd>
+<p>
+ Do not output flags and parameters not meant for
+ <tt>git-rev-list</tt> command.
+</p>
+</dd>
+<dt>
+--no-revs
+</dt>
+<dd>
+<p>
+ Do not output flags and parameters meant for
+ <tt>git-rev-list</tt> command.
+</p>
+</dd>
+<dt>
+--flags
+</dt>
+<dd>
+<p>
+ Do not output non-flag parameters.
+</p>
+</dd>
+<dt>
+--no-flags
+</dt>
+<dd>
+<p>
+ Do not output flag parameters.
+</p>
+</dd>
+<dt>
+--default <arg>
+</dt>
+<dd>
+<p>
+ If there is no parameter given by the user, use <tt><arg></tt>
+ instead.
+</p>
+</dd>
+<dt>
+--verify
+</dt>
+<dd>
+<p>
+ The parameter given must be usable as a single, valid
+ object name. Otherwise barf and abort.
+</p>
+</dd>
+<dt>
+--sq
+</dt>
+<dd>
+<p>
+ Usually the output is made one line per flag and
+ parameter. This option makes output a single line,
+ properly quoted for consumption by shell. Useful when
+ you expect your parameter to contain whitespaces and
+ newlines (e.g. when using pickaxe <tt>-S</tt> with
+ <tt>git-diff-*</tt>).
+</p>
+</dd>
+<dt>
+--not
+</dt>
+<dd>
+<p>
+ When showing object names, prefix them with <em>^</em> and
+ strip <em>^</em> prefix from the object names that already have
+ one.
+</p>
+</dd>
+<dt>
+--symbolic
+</dt>
+<dd>
+<p>
+ Usually the object names are output in SHA1 form (with
+ possible <em>^</em> prefix); this option makes them output in a
+ form as close to the original input as possible.
+</p>
+</dd>
+<dt>
+--all
+</dt>
+<dd>
+<p>
+ Show all refs found in <tt>$GIT_DIR/refs</tt>.
+</p>
+</dd>
+<dt>
+--show-prefix
+</dt>
+<dd>
+<p>
+ When the command is invoked from a subdirectory, show the
+ path of the current directory relative to the top-level
+ directory.
+</p>
+</dd>
+<dt>
+--show-cdup
+</dt>
+<dd>
+<p>
+ When the command is invoked from a subdirectory, show the
+ path of the top-level directory relative to the current
+ directory (typically a sequence of "../", or an empty string).
+</p>
+</dd>
+<dt>
+--since=datestring, --after=datestring
+</dt>
+<dd>
+<p>
+ Parses the date string, and outputs corresponding
+ --max-age= parameter for git-rev-list command.
+</p>
+</dd>
+<dt>
+--until=datestring, --before=datestring
+</dt>
+<dd>
+<p>
+ Parses the date string, and outputs corresponding
+ --min-age= parameter for git-rev-list command.
+</p>
+</dd>
+<dt>
+<args>…
+</dt>
+<dd>
+<p>
+ Flags and parameters to be parsed.
+</p>
+</dd>
+</dl>
+</div>
+<h2>SPECIFYING REVISIONS</h2>
+<div class="sectionbody">
+<p>A revision parameter typically, but not necessarily, names a
+commit object. They use what is called an <em>extended SHA1</em>
+syntax.</p>
+<ul>
+<li>
+<p>
+The full SHA1 object name (40-byte hexadecimal string), or
+ a substring of such that is unique within the repository.
+ E.g. dae86e1950b1277e545cee180551750029cfe735 and dae86e both
+ name the same commit object if there are no other object in
+ your repository whose object name starts with dae86e.
+</p>
+</li>
+<li>
+<p>
+A symbolic ref name. E.g. <em>master</em> typically means the commit
+ object referenced by $GIT_DIR/refs/heads/master. If you
+ happen to have both heads/master and tags/master, you can
+ explicitly say <em>heads/master</em> to tell git which one you mean.
+</p>
+</li>
+<li>
+<p>
+A suffix <em>^</em> to a revision parameter means the first parent of
+ that commit object. <em>^<n></em> means the <n>th parent (i.e.
+ <em>rev^</em>
+ is equivalent to <em>rev^1</em>). As a special rule,
+ <em>rev^0</em> means the commit itself and is used when <em>rev</em> is the
+ object name of a tag object that refers to a commit object.
+</p>
+</li>
+<li>
+<p>
+A suffix <em>~<n></em> to a revision parameter means the commit
+ object that is the <n>th generation grand-parent of the named
+ commit object, following only the first parent. I.e. rev~3 is
+ equivalent to rev^^^ which is equivalent to rev^1^1^1.
+</p>
+</li>
+<li>
+<p>
+A suffix <em>^</em> followed by an object type name enclosed in
+ brace pair (e.g. <tt>v0.99.8^{commit}</tt>) means the object
+ could be a tag, and dereference the tag recursively until an
+ object of that type is found or the object cannot be
+ dereferenced anymore (in which case, barf). <tt>rev^0</tt>
+ introduced earlier is a short-hand for <tt>rev^{commit}</tt>.
+</p>
+</li>
+<li>
+<p>
+A suffix <em>^</em> followed by an empty brace pair
+ (e.g. <tt>v0.99.8^{}</tt>) means the object could be a tag,
+ and dereference the tag recursively until a non-tag object is
+ found.
+</p>
+</li>
+</ul>
+<p><em>git-rev-parse</em> also accepts a prefix <em>^</em> to revision parameter,
+which is passed to <em>git-rev-list</em>. Two revision parameters
+concatenated with <em>..</em> is a short-hand for writing a range
+between them. I.e. <em>r1..r2</em> is equivalent to saying <em>^r1 r2</em></p>
+<p>Here is an illustration, by Jon Loeliger. Both node B and C are
+a commit parents of commit node A. Parent commits are ordered
+left-to-right.</p>
+<div class="literalblock">
+<div class="content">
+<pre><tt>G H I J
+ \ / \ /
+ D E F
+ \ | /
+ \ | /
+ \|/
+ B C
+ \ /
+ \ /
+ A</tt></pre>
+</div></div>
+<div class="literalblock">
+<div class="content">
+<pre><tt>A = = A^0
+B = A^ = A^1 = A~1
+C = A^2 = A^2
+D = A^^ = A^1^1 = A~2
+E = B^2 = A^^2
+F = B^3 = A^^3
+G = A^^^ = A^1^1^1 = A~3
+H = D^2 = B^^2 = A^^^2 = A~2^2
+I = F^ = B^3^ = A^^3^
+J = F^2 = B^3^2 = A^^3^2</tt></pre>
+</div></div>
+</div>
+<h2>Author</h2>
+<div class="sectionbody">
+<p>Written by Linus Torvalds <torvalds@osdl.org> and
+Junio C Hamano <junkio@cox.net></p>
+</div>
+<h2>Documentation</h2>
+<div class="sectionbody">
+<p>Documentation by Junio C Hamano and the git-list <git@vger.kernel.org>.</p>
+</div>
+<h2>GIT</h2>
+<div class="sectionbody">
+<p>Part of the <a href="git.html">git(7)</a> suite</p>
+</div>
+<div id="footer">
+<div id="footer-text">
+Last updated 27-Dec-2005 00:16:39 PDT
+</div>
+</div>
+</body>
+</html>
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