Documentation / git-show-ref.txton commit Add man page for git-show-ref (c0990ff)
   1git-show-ref(1)
   2===============
   3
   4NAME
   5----
   6git-show-ref - List references in a local repository
   7
   8SYNOPSIS
   9--------
  10[verse]
  11'git-show-ref' [-q|--quiet] [--verify] [-h|--head] [-d|--dereference]
  12             [--tags] [--heads] [--] <pattern>...
  13
  14DESCRIPTION
  15-----------
  16
  17Displays references available in a local repository along with the associated
  18commit IDs. Results can be filtered using a pattern and tags can be
  19dereferenced into object IDs. Additionally, it can be used to test whether a
  20particular ref exists.
  21
  22Use of this utility is encouraged in favor of directly accessing files under
  23in the `.git` directory.
  24
  25OPTIONS
  26-------
  27
  28-h, --head::
  29
  30        Show the HEAD reference.
  31
  32--tags, --heads::
  33
  34        Limit to only "refs/heads" and "refs/tags", respectively.  These
  35        options are not mutually exclusive; when given both, references stored
  36        in "refs/heads" and "refs/tags" are displayed.
  37
  38-d, --dereference::
  39
  40        Dereference tags into object IDs. They will be shown with "^{}"
  41        appended.
  42
  43--verify::
  44
  45        Enable stricter reference checking by requiring an exact ref path.
  46        Aside from returning an error code of 1, it will also print an error
  47        message if '--quiet' was not specified.
  48
  49-q, --quiet::
  50
  51        Do not print any results to stdout. When combined with '--verify' this
  52        can be used to silently check if a reference exists.
  53
  54<pattern>::
  55
  56        Show references matching one or more patterns.
  57
  58OUTPUT
  59------
  60
  61The output is in the format: '<SHA-1 ID>' '<space>' '<reference name>'.
  62
  63-----------------------------------------------------------------------------
  64$ git show-ref --head --dereference
  65832e76a9899f560a90ffd62ae2ce83bbeff58f54 HEAD
  66832e76a9899f560a90ffd62ae2ce83bbeff58f54 refs/heads/master
  67832e76a9899f560a90ffd62ae2ce83bbeff58f54 refs/heads/origin
  683521017556c5de4159da4615a39fa4d5d2c279b5 refs/tags/v0.99.9c
  696ddc0964034342519a87fe013781abf31c6db6ad refs/tags/v0.99.9c^{}
  70055e4ae3ae6eb344cbabf2a5256a49ea66040131 refs/tags/v1.0rc4
  71423325a2d24638ddcc82ce47be5e40be550f4507 refs/tags/v1.0rc4^{}
  72...
  73-----------------------------------------------------------------------------
  74
  75EXAMPLE
  76-------
  77
  78To show all references called "master", whether tags or heads or anything
  79else, and regardless of how deep in the reference naming hierarchy they are,
  80use:
  81
  82-----------------------------------------------------------------------------
  83        git show-ref master
  84-----------------------------------------------------------------------------
  85
  86This will show "refs/heads/master" but also "refs/remote/other-repo/master",
  87if such references exists.
  88
  89When using the '--verify' flag, the command requires an exact path:
  90
  91-----------------------------------------------------------------------------
  92        git show-ref --verify refs/heads/master
  93-----------------------------------------------------------------------------
  94
  95will only match the exact branch called "master".
  96
  97If nothing matches, gitlink:git-show-ref[1] will return an error code of 1,
  98and in the case of verification, it will show an error message.
  99
 100For scripting, you can ask it to be quiet with the "--quiet" flag, which
 101allows you to do things like
 102
 103-----------------------------------------------------------------------------
 104        git-show-ref --quiet --verify -- "refs/heads/$headname" ||
 105                echo "$headname is not a valid branch"
 106-----------------------------------------------------------------------------
 107
 108to check whether a particular branch exists or not (notice how we don't
 109actually want to show any results, and we want to use the full refname for it
 110in order to not trigger the problem with ambiguous partial matches).
 111
 112To show only tags, or only proper branch heads, use "--tags" and/or "--heads"
 113respectively (using both means that it shows tags and heads, but not other
 114random references under the refs/ subdirectory).
 115
 116To do automatic tag object dereferencing, use the "-d" or "--dereference"
 117flag, so you can do
 118
 119-----------------------------------------------------------------------------
 120        git show-ref --tags --dereference
 121-----------------------------------------------------------------------------
 122
 123to get a listing of all tags together with what they dereference.
 124
 125SEE ALSO
 126--------
 127gitlink:git-ls-remote[1], gitlink:git-peek-remote[1]
 128
 129AUTHORS
 130-------
 131Written by Linus Torvalds <torvalds@osdl.org>.
 132Man page by Jonas Fonseca <fonseca@diku.dk>.
 133
 134GIT
 135---
 136Part of the gitlink:git[7] suite