Documentation/git-show-ref.txt

   1 git-show-ref(1)
   2 ===============
   3
   4 NAME
   5 ----
   6 git-show-ref - List references in a local repository
   7
   8 SYNOPSIS
   9 --------
  10 [verse]
  11 'git show-ref' [-q|--quiet] [--verify] [--head] [-d|--dereference]
  12              [-s|--hash[=<n>]] [--abbrev[=<n>]] [--tags]
  13              [--heads] [--] [<pattern>...]
  14 'git show-ref' --exclude-existing[=<pattern>]
  15
  16 DESCRIPTION
  17 -----------
  18
  19 Displays references available in a local repository along with the associated
  20 commit IDs. Results can be filtered using a pattern and tags can be
  21 dereferenced into object IDs. Additionally, it can be used to test whether a
  22 particular ref exists.
  23
  24 By default, shows the tags, heads, and remote refs.
  25
  26 The --exclude-existing form is a filter that does the inverse. It reads
  27 refs from stdin, one ref per line, and shows those that don't exist in
  28 the local repository.
  29
  30 Use of this utility is encouraged in favor of directly accessing files under
  31 the `.git` directory.
  32
  33 OPTIONS
  34 -------
  35
  36 --head::
  37
  38         Show the HEAD reference, even if it would normally be filtered out.
  39
  40 --heads::
  41 --tags::
  42
  43         Limit to "refs/heads" and "refs/tags", respectively.  These options
  44         are not mutually exclusive; when given both, references stored in
  45         "refs/heads" and "refs/tags" are displayed.
  46
  47 -d::
  48 --dereference::
  49
  50         Dereference tags into object IDs as well. They will be shown with "{caret}{}"
  51         appended.
  52
  53 -s::
  54 --hash[=<n>]::
  55
  56         Only show the SHA-1 hash, not the reference name. When combined with
  57         --dereference the dereferenced tag will still be shown after the SHA-1.
  58
  59 --verify::
  60
  61         Enable stricter reference checking by requiring an exact ref path.
  62         Aside from returning an error code of 1, it will also print an error
  63         message if `--quiet` was not specified.
  64
  65 --abbrev[=<n>]::
  66
  67         Abbreviate the object name.  When using `--hash`, you do
  68         not have to say `--hash --abbrev`; `--hash=n` would do.
  69
  70 -q::
  71 --quiet::
  72
  73         Do not print any results to stdout. When combined with `--verify` this
  74         can be used to silently check if a reference exists.
  75
  76 --exclude-existing[=<pattern>]::
  77
  78         Make 'git show-ref' act as a filter that reads refs from stdin of the
  79         form "`^(?:<anything>\s)?<refname>(?:\^{})?$`"
  80         and performs the following actions on each:
  81         (1) strip "{caret}{}" at the end of line if any;
  82         (2) ignore if pattern is provided and does not head-match refname;
  83         (3) warn if refname is not a well-formed refname and skip;
  84         (4) ignore if refname is a ref that exists in the local repository;
  85         (5) otherwise output the line.
  86
  87
  88 <pattern>...::
  89
  90         Show references matching one or more patterns. Patterns are matched from
  91         the end of the full name, and only complete parts are matched, e.g.
  92         'master' matches 'refs/heads/master', 'refs/remotes/origin/master',
  93         'refs/tags/jedi/master' but not 'refs/heads/mymaster' or
  94         'refs/remotes/master/jedi'.
  95
  96 OUTPUT
  97 ------
  98
  99 The output is in the format: '<SHA-1 ID>' '<space>' '<reference name>'.
 100
 101 -----------------------------------------------------------------------------
 102 $ git show-ref --head --dereference
 103 832e76a9899f560a90ffd62ae2ce83bbeff58f54 HEAD
 104 832e76a9899f560a90ffd62ae2ce83bbeff58f54 refs/heads/master
 105 832e76a9899f560a90ffd62ae2ce83bbeff58f54 refs/heads/origin
 106 3521017556c5de4159da4615a39fa4d5d2c279b5 refs/tags/v0.99.9c
 107 6ddc0964034342519a87fe013781abf31c6db6ad refs/tags/v0.99.9c^{}
 108 055e4ae3ae6eb344cbabf2a5256a49ea66040131 refs/tags/v1.0rc4
 109 423325a2d24638ddcc82ce47be5e40be550f4507 refs/tags/v1.0rc4^{}
 110 ...
 111 -----------------------------------------------------------------------------
 112
 113 When using --hash (and not --dereference) the output format is: '<SHA-1 ID>'
 114
 115 -----------------------------------------------------------------------------
 116 $ git show-ref --heads --hash
 117 2e3ba0114a1f52b47df29743d6915d056be13278
 118 185008ae97960c8d551adcd9e23565194651b5d1
 119 03adf42c988195b50e1a1935ba5fcbc39b2b029b
 120 ...
 121 -----------------------------------------------------------------------------
 122
 123 EXAMPLES
 124 --------
 125
 126 To show all references called "master", whether tags or heads or anything
 127 else, and regardless of how deep in the reference naming hierarchy they are,
 128 use:
 129
 130 -----------------------------------------------------------------------------
 131         git show-ref master
 132 -----------------------------------------------------------------------------
 133
 134 This will show "refs/heads/master" but also "refs/remote/other-repo/master",
 135 if such references exists.
 136
 137 When using the `--verify` flag, the command requires an exact path:
 138
 139 -----------------------------------------------------------------------------
 140         git show-ref --verify refs/heads/master
 141 -----------------------------------------------------------------------------
 142
 143 will only match the exact branch called "master".
 144
 145 If nothing matches, 'git show-ref' will return an error code of 1,
 146 and in the case of verification, it will show an error message.
 147
 148 For scripting, you can ask it to be quiet with the "--quiet" flag, which
 149 allows you to do things like
 150
 151 -----------------------------------------------------------------------------
 152         git show-ref --quiet --verify -- "refs/heads/$headname" ||
 153                 echo "$headname is not a valid branch"
 154 -----------------------------------------------------------------------------
 155
 156 to check whether a particular branch exists or not (notice how we don't
 157 actually want to show any results, and we want to use the full refname for it
 158 in order to not trigger the problem with ambiguous partial matches).
 159
 160 To show only tags, or only proper branch heads, use "--tags" and/or "--heads"
 161 respectively (using both means that it shows tags and heads, but not other
 162 random references under the refs/ subdirectory).
 163
 164 To do automatic tag object dereferencing, use the "-d" or "--dereference"
 165 flag, so you can do
 166
 167 -----------------------------------------------------------------------------
 168         git show-ref --tags --dereference
 169 -----------------------------------------------------------------------------
 170
 171 to get a listing of all tags together with what they dereference.
 172
 173 FILES
 174 -----
 175 `.git/refs/*`, `.git/packed-refs`
 176
 177 SEE ALSO
 178 --------
 179 linkgit:git-for-each-ref[1],
 180 linkgit:git-ls-remote[1],
 181 linkgit:git-update-ref[1],
 182 linkgit:gitrepository-layout[5]
 183
 184 GIT
 185 ---
 186 Part of the linkgit:git[1] suite