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177 lines
5.6 KiB
177 lines
5.6 KiB
git-show-ref(1) |
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=============== |
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NAME |
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---- |
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git-show-ref - List references in a local repository |
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SYNOPSIS |
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-------- |
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[verse] |
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'git show-ref' [-q|--quiet] [--verify] [--head] [-d|--dereference] |
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[-s|--hash[=<n>]] [--abbrev[=<n>]] [--tags] |
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[--heads] [--] <pattern>... |
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'git show-ref' --exclude-existing[=<pattern>] < ref-list |
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DESCRIPTION |
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----------- |
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Displays references available in a local repository along with the associated |
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commit IDs. Results can be filtered using a pattern and tags can be |
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dereferenced into object IDs. Additionally, it can be used to test whether a |
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particular ref exists. |
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The --exclude-existing form is a filter that does the inverse, it shows the |
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refs from stdin that don't exist in the local repository. |
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Use of this utility is encouraged in favor of directly accessing files under |
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the `.git` directory. |
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OPTIONS |
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------- |
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--head:: |
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Show the HEAD reference. |
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--tags:: |
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--heads:: |
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Limit to only "refs/heads" and "refs/tags", respectively. These |
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options are not mutually exclusive; when given both, references stored |
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in "refs/heads" and "refs/tags" are displayed. |
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-d:: |
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--dereference:: |
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Dereference tags into object IDs as well. They will be shown with "^{}" |
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appended. |
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-s:: |
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--hash[=<n>]:: |
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Only show the SHA1 hash, not the reference name. When combined with |
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--dereference the dereferenced tag will still be shown after the SHA1. |
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--verify:: |
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Enable stricter reference checking by requiring an exact ref path. |
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Aside from returning an error code of 1, it will also print an error |
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message if '--quiet' was not specified. |
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--abbrev[=<n>]:: |
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Abbreviate the object name. When using `--hash`, you do |
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not have to say `--hash --abbrev`; `--hash=n` would do. |
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-q:: |
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--quiet:: |
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Do not print any results to stdout. When combined with '--verify' this |
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can be used to silently check if a reference exists. |
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--exclude-existing[=<pattern>]:: |
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Make 'git show-ref' act as a filter that reads refs from stdin of the |
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form "^(?:<anything>\s)?<refname>(?:\^\{\})?$" and performs the |
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following actions on each: |
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(1) strip "^{}" at the end of line if any; |
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(2) ignore if pattern is provided and does not head-match refname; |
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(3) warn if refname is not a well-formed refname and skip; |
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(4) ignore if refname is a ref that exists in the local repository; |
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(5) otherwise output the line. |
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<pattern>...:: |
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Show references matching one or more patterns. |
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OUTPUT |
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------ |
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The output is in the format: '<SHA-1 ID>' '<space>' '<reference name>'. |
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----------------------------------------------------------------------------- |
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$ git show-ref --head --dereference |
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832e76a9899f560a90ffd62ae2ce83bbeff58f54 HEAD |
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832e76a9899f560a90ffd62ae2ce83bbeff58f54 refs/heads/master |
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832e76a9899f560a90ffd62ae2ce83bbeff58f54 refs/heads/origin |
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3521017556c5de4159da4615a39fa4d5d2c279b5 refs/tags/v0.99.9c |
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6ddc0964034342519a87fe013781abf31c6db6ad refs/tags/v0.99.9c^{} |
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055e4ae3ae6eb344cbabf2a5256a49ea66040131 refs/tags/v1.0rc4 |
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423325a2d24638ddcc82ce47be5e40be550f4507 refs/tags/v1.0rc4^{} |
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... |
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----------------------------------------------------------------------------- |
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When using --hash (and not --dereference) the output format is: '<SHA-1 ID>' |
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----------------------------------------------------------------------------- |
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$ git show-ref --heads --hash |
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2e3ba0114a1f52b47df29743d6915d056be13278 |
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185008ae97960c8d551adcd9e23565194651b5d1 |
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03adf42c988195b50e1a1935ba5fcbc39b2b029b |
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... |
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----------------------------------------------------------------------------- |
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EXAMPLE |
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------- |
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To show all references called "master", whether tags or heads or anything |
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else, and regardless of how deep in the reference naming hierarchy they are, |
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use: |
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----------------------------------------------------------------------------- |
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git show-ref master |
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----------------------------------------------------------------------------- |
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This will show "refs/heads/master" but also "refs/remote/other-repo/master", |
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if such references exists. |
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When using the '--verify' flag, the command requires an exact path: |
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----------------------------------------------------------------------------- |
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git show-ref --verify refs/heads/master |
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----------------------------------------------------------------------------- |
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will only match the exact branch called "master". |
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If nothing matches, 'git show-ref' will return an error code of 1, |
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and in the case of verification, it will show an error message. |
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For scripting, you can ask it to be quiet with the "--quiet" flag, which |
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allows you to do things like |
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----------------------------------------------------------------------------- |
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git show-ref --quiet --verify -- "refs/heads/$headname" || |
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echo "$headname is not a valid branch" |
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----------------------------------------------------------------------------- |
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to check whether a particular branch exists or not (notice how we don't |
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actually want to show any results, and we want to use the full refname for it |
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in order to not trigger the problem with ambiguous partial matches). |
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To show only tags, or only proper branch heads, use "--tags" and/or "--heads" |
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respectively (using both means that it shows tags and heads, but not other |
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random references under the refs/ subdirectory). |
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To do automatic tag object dereferencing, use the "-d" or "--dereference" |
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flag, so you can do |
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----------------------------------------------------------------------------- |
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git show-ref --tags --dereference |
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----------------------------------------------------------------------------- |
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to get a listing of all tags together with what they dereference. |
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SEE ALSO |
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-------- |
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linkgit:git-ls-remote[1] |
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AUTHORS |
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------- |
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Written by Linus Torvalds <torvalds@osdl.org>. |
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Man page by Jonas Fonseca <fonseca@diku.dk>. |
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GIT |
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--- |
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Part of the linkgit:git[1] suite
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