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Add man page for git-show-ref

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Signed-off-by: Jonas Fonseca <fonseca@diku.dk>
Signed-off-by: Junio C Hamano <junkio@cox.net>
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Jonas Fonseca 2006-09-18 14:32:41 +02:00 committed by Junio C Hamano
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git-show-ref(1)
===============
NAME
----
git-show-ref - List references in a local repository
SYNOPSIS
--------
[verse]
'git-show-ref' [-q|--quiet] [--verify] [-h|--head] [-d|--dereference]
[--tags] [--heads] [--] <pattern>...
DESCRIPTION
-----------
Displays references available in a local repository along with the associated
commit IDs. Results can be filtered using a pattern and tags can be
dereferenced into object IDs. Additionally, it can be used to test whether a
particular ref exists.
Use of this utility is encouraged in favor of directly accessing files under
in the `.git` directory.
OPTIONS
-------
-h, --head::
Show the HEAD reference.
--tags, --heads::
Limit to only "refs/heads" and "refs/tags", respectively. These
options are not mutually exclusive; when given both, references stored
in "refs/heads" and "refs/tags" are displayed.
-d, --dereference::
Dereference tags into object IDs. They will be shown with "^{}"
appended.
--verify::
Enable stricter reference checking by requiring an exact ref path.
Aside from returning an error code of 1, it will also print an error
message if '--quiet' was not specified.
-q, --quiet::
Do not print any results to stdout. When combined with '--verify' this
can be used to silently check if a reference exists.
<pattern>::
Show references matching one or more patterns.
OUTPUT
------
The output is in the format: '<SHA-1 ID>' '<space>' '<reference name>'.
-----------------------------------------------------------------------------
$ git show-ref --head --dereference
832e76a9899f560a90ffd62ae2ce83bbeff58f54 HEAD
832e76a9899f560a90ffd62ae2ce83bbeff58f54 refs/heads/master
832e76a9899f560a90ffd62ae2ce83bbeff58f54 refs/heads/origin
3521017556c5de4159da4615a39fa4d5d2c279b5 refs/tags/v0.99.9c
6ddc0964034342519a87fe013781abf31c6db6ad refs/tags/v0.99.9c^{}
055e4ae3ae6eb344cbabf2a5256a49ea66040131 refs/tags/v1.0rc4
423325a2d24638ddcc82ce47be5e40be550f4507 refs/tags/v1.0rc4^{}
...
-----------------------------------------------------------------------------
EXAMPLE
-------
To show all references called "master", whether tags or heads or anything
else, and regardless of how deep in the reference naming hierarchy they are,
use:
-----------------------------------------------------------------------------
git show-ref master
-----------------------------------------------------------------------------
This will show "refs/heads/master" but also "refs/remote/other-repo/master",
if such references exists.
When using the '--verify' flag, the command requires an exact path:
-----------------------------------------------------------------------------
git show-ref --verify refs/heads/master
-----------------------------------------------------------------------------
will only match the exact branch called "master".
If nothing matches, gitlink:git-show-ref[1] will return an error code of 1,
and in the case of verification, it will show an error message.
For scripting, you can ask it to be quiet with the "--quiet" flag, which
allows you to do things like
-----------------------------------------------------------------------------
git-show-ref --quiet --verify -- "refs/heads/$headname" ||
echo "$headname is not a valid branch"
-----------------------------------------------------------------------------
to check whether a particular branch exists or not (notice how we don't
actually want to show any results, and we want to use the full refname for it
in order to not trigger the problem with ambiguous partial matches).
To show only tags, or only proper branch heads, use "--tags" and/or "--heads"
respectively (using both means that it shows tags and heads, but not other
random references under the refs/ subdirectory).
To do automatic tag object dereferencing, use the "-d" or "--dereference"
flag, so you can do
-----------------------------------------------------------------------------
git show-ref --tags --dereference
-----------------------------------------------------------------------------
to get a listing of all tags together with what they dereference.
SEE ALSO
--------
gitlink:git-ls-remote[1], gitlink:git-peek-remote[1]
AUTHORS
-------
Written by Linus Torvalds <torvalds@osdl.org>.
Man page by Jonas Fonseca <fonseca@diku.dk>.
GIT
---
Part of the gitlink:git[7] suite