Documentation / git-show-ref.txton commit lock_ref_sha1(): do not sometimes error() and sometimes die(). (5cc3cef)
   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             [-s|--hash] [--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-s, --hash::
  44
  45        Only show the SHA1 hash, not the reference name. When also using
  46        --dereference the dereferenced tag will still be shown after the SHA1,
  47        this maybe a bug.
  48
  49--verify::
  50
  51        Enable stricter reference checking by requiring an exact ref path.
  52        Aside from returning an error code of 1, it will also print an error
  53        message if '--quiet' was not specified.
  54
  55-q, --quiet::
  56
  57        Do not print any results to stdout. When combined with '--verify' this
  58        can be used to silently check if a reference exists.
  59
  60<pattern>::
  61
  62        Show references matching one or more patterns.
  63
  64OUTPUT
  65------
  66
  67The output is in the format: '<SHA-1 ID>' '<space>' '<reference name>'.
  68
  69-----------------------------------------------------------------------------
  70$ git show-ref --head --dereference
  71832e76a9899f560a90ffd62ae2ce83bbeff58f54 HEAD
  72832e76a9899f560a90ffd62ae2ce83bbeff58f54 refs/heads/master
  73832e76a9899f560a90ffd62ae2ce83bbeff58f54 refs/heads/origin
  743521017556c5de4159da4615a39fa4d5d2c279b5 refs/tags/v0.99.9c
  756ddc0964034342519a87fe013781abf31c6db6ad refs/tags/v0.99.9c^{}
  76055e4ae3ae6eb344cbabf2a5256a49ea66040131 refs/tags/v1.0rc4
  77423325a2d24638ddcc82ce47be5e40be550f4507 refs/tags/v1.0rc4^{}
  78...
  79-----------------------------------------------------------------------------
  80
  81When using --hash (and not --dereference) the output format is: '<SHA-1 ID>'
  82
  83-----------------------------------------------------------------------------
  84$ git show-ref --heads --hash
  852e3ba0114a1f52b47df29743d6915d056be13278
  86185008ae97960c8d551adcd9e23565194651b5d1
  8703adf42c988195b50e1a1935ba5fcbc39b2b029b
  88...
  89-----------------------------------------------------------------------------
  90
  91EXAMPLE
  92-------
  93
  94To show all references called "master", whether tags or heads or anything
  95else, and regardless of how deep in the reference naming hierarchy they are,
  96use:
  97
  98-----------------------------------------------------------------------------
  99        git show-ref master
 100-----------------------------------------------------------------------------
 101
 102This will show "refs/heads/master" but also "refs/remote/other-repo/master",
 103if such references exists.
 104
 105When using the '--verify' flag, the command requires an exact path:
 106
 107-----------------------------------------------------------------------------
 108        git show-ref --verify refs/heads/master
 109-----------------------------------------------------------------------------
 110
 111will only match the exact branch called "master".
 112
 113If nothing matches, gitlink:git-show-ref[1] will return an error code of 1,
 114and in the case of verification, it will show an error message.
 115
 116For scripting, you can ask it to be quiet with the "--quiet" flag, which
 117allows you to do things like
 118
 119-----------------------------------------------------------------------------
 120        git-show-ref --quiet --verify -- "refs/heads/$headname" ||
 121                echo "$headname is not a valid branch"
 122-----------------------------------------------------------------------------
 123
 124to check whether a particular branch exists or not (notice how we don't
 125actually want to show any results, and we want to use the full refname for it
 126in order to not trigger the problem with ambiguous partial matches).
 127
 128To show only tags, or only proper branch heads, use "--tags" and/or "--heads"
 129respectively (using both means that it shows tags and heads, but not other
 130random references under the refs/ subdirectory).
 131
 132To do automatic tag object dereferencing, use the "-d" or "--dereference"
 133flag, so you can do
 134
 135-----------------------------------------------------------------------------
 136        git show-ref --tags --dereference
 137-----------------------------------------------------------------------------
 138
 139to get a listing of all tags together with what they dereference.
 140
 141SEE ALSO
 142--------
 143gitlink:git-ls-remote[1], gitlink:git-peek-remote[1]
 144
 145AUTHORS
 146-------
 147Written by Linus Torvalds <torvalds@osdl.org>.
 148Man page by Jonas Fonseca <fonseca@diku.dk>.
 149
 150GIT
 151---
 152Part of the gitlink:git[7] suite