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173 lines
5.6 KiB
Plaintext
173 lines
5.6 KiB
Plaintext
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] [-h|--head] [-d|--dereference]
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[-s|--hash] [--abbrev] [--tags] [--heads] [--] <pattern>...
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'git-show-ref' --exclude-existing[=pattern]
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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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in the `.git` directory.
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OPTIONS
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-------
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-h, --head::
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Show the HEAD reference.
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--tags, --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, --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, --hash::
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Only show the SHA1 hash, not the reference name. When also using
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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, --abbrev=len::
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Abbreviate the object name. When using `--hash`, you do
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not have to say `--hash --abbrev`; `--hash=len` would do.
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-q, --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, --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, linkgit:git-show-ref[1] 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[7] suite
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