6 git-rev-parse - Pick out and massage parameters
11 'git rev-parse' [ --option ] <args>...
16 Many git porcelainish commands take mixture of flags
17 (i.e. parameters that begin with a dash '-') and parameters
18 meant for the underlying 'git rev-list' command they use internally
19 and flags and parameters for the other commands they use
20 downstream of 'git rev-list'. This command is used to
21 distinguish between them.
27 Use 'git rev-parse' in option parsing mode (see PARSEOPT section below).
30 Only meaningful in `--parseopt` mode. Tells the option parser to echo
31 out the first `--` met instead of skipping it.
33 --stop-at-non-option::
34 Only meaningful in `--parseopt` mode. Lets the option parser stop at
35 the first non-option argument. This can be used to parse sub-commands
36 that take options themselves.
39 Use 'git rev-parse' in shell quoting mode (see SQ-QUOTE
40 section below). In contrast to the `--sq` option below, this
41 mode does only quoting. Nothing else is done to command input.
44 Do not output flags and parameters not meant for
45 'git rev-list' command.
48 Do not output flags and parameters meant for
49 'git rev-list' command.
52 Do not output non-flag parameters.
55 Do not output flag parameters.
58 If there is no parameter given by the user, use `<arg>`
62 The parameter given must be usable as a single, valid
63 object name. Otherwise barf and abort.
67 Only meaningful in `--verify` mode. Do not output an error
68 message if the first argument is not a valid object name;
69 instead exit with non-zero status silently.
72 Usually the output is made one line per flag and
73 parameter. This option makes output a single line,
74 properly quoted for consumption by shell. Useful when
75 you expect your parameter to contain whitespaces and
76 newlines (e.g. when using pickaxe `-S` with
77 'git diff-\*'). In contrast to the `--sq-quote` option,
78 the command input is still interpreted as usual.
81 When showing object names, prefix them with '{caret}' and
82 strip '{caret}' prefix from the object names that already have
86 Usually the object names are output in SHA1 form (with
87 possible '{caret}' prefix); this option makes them output in a
88 form as close to the original input as possible.
90 --symbolic-full-name::
91 This is similar to \--symbolic, but it omits input that
92 are not refs (i.e. branch or tag names; or more
93 explicitly disambiguating "heads/master" form, when you
94 want to name the "master" branch when there is an
95 unfortunately named tag "master"), and show them as full
96 refnames (e.g. "refs/heads/master").
98 --abbrev-ref[={strict|loose}]::
99 A non-ambiguous short name of the objects name.
100 The option core.warnAmbiguousRefs is used to select the strict
104 Show all refs found in `refs/`.
106 --branches[=pattern]::
108 --remotes[=pattern]::
109 Show all branches, tags, or remote-tracking branches,
110 respectively (i.e., refs found in `refs/heads`,
111 `refs/tags`, or `refs/remotes`, respectively).
113 If a `pattern` is given, only refs matching the given shell glob are
114 shown. If the pattern does not contain a globbing character (`?`,
115 `\*`, or `[`), it is turned into a prefix match by appending `/\*`.
118 Show all refs matching the shell glob pattern `pattern`. If
119 the pattern does not start with `refs/`, this is automatically
120 prepended. If the pattern does not contain a globbing
121 character (`?`, `\*`, or `[`), it is turned into a prefix
122 match by appending `/\*`.
125 Show the absolute path of the top-level directory.
128 When the command is invoked from a subdirectory, show the
129 path of the current directory relative to the top-level
133 When the command is invoked from a subdirectory, show the
134 path of the top-level directory relative to the current
135 directory (typically a sequence of "../", or an empty string).
138 Show `$GIT_DIR` if defined else show the path to the .git directory.
140 --is-inside-git-dir::
141 When the current working directory is below the repository
142 directory print "true", otherwise "false".
144 --is-inside-work-tree::
145 When the current working directory is inside the work tree of the
146 repository print "true", otherwise "false".
148 --is-bare-repository::
149 When the repository is bare print "true", otherwise "false".
152 List the GIT_* environment variables that are local to the
153 repository (e.g. GIT_DIR or GIT_WORK_TREE, but not GIT_EDITOR).
154 Only the names of the variables are listed, not their value,
155 even if they are set.
159 Instead of outputting the full SHA1 values of object names try to
160 abbreviate them to a shorter unique name. When no length is specified
161 7 is used. The minimum length is 4.
165 Parse the date string, and output the corresponding
166 --max-age= parameter for 'git rev-list'.
169 --before=datestring::
170 Parse the date string, and output the corresponding
171 --min-age= parameter for 'git rev-list'.
174 Flags and parameters to be parsed.
177 include::revisions.txt[]
182 In `--parseopt` mode, 'git rev-parse' helps massaging options to bring to shell
183 scripts the same facilities C builtins have. It works as an option normalizer
184 (e.g. splits single switches aggregate values), a bit like `getopt(1)` does.
186 It takes on the standard input the specification of the options to parse and
187 understand, and echoes on the standard output a string suitable for `sh(1)` `eval`
188 to replace the arguments with normalized ones. In case of error, it outputs
189 usage on the standard error stream, and exits with code 129.
191 Note: Make sure you quote the result when passing it to `eval`. See
192 below for an example.
197 'git rev-parse --parseopt' input format is fully text based. It has two parts,
198 separated by a line that contains only `--`. The lines before the separator
199 (should be more than one) are used for the usage.
200 The lines after the separator describe the options.
202 Each line of options has this format:
205 <opt_spec><flags>* SP+ help LF
209 its format is the short option character, then the long option name
210 separated by a comma. Both parts are not required, though at least one
211 is necessary. `h,help`, `dry-run` and `f` are all three correct
215 `<flags>` are of `*`, `=`, `?` or `!`.
216 * Use `=` if the option takes an argument.
218 * Use `?` to mean that the option is optional (though its use is discouraged).
220 * Use `*` to mean that this option should not be listed in the usage
221 generated for the `-h` argument. It's shown for `--help-all` as
222 documented in linkgit:gitcli[7].
224 * Use `!` to not make the corresponding negated long option available.
226 The remainder of the line, after stripping the spaces, is used
227 as the help associated to the option.
229 Blank lines are ignored, and lines that don't match this specification are used
230 as option group headers (start the line with a space to create such
238 some-command [options] <args>...
240 some-command does foo and bar!
244 foo some nifty option --foo
245 bar= some cool option --bar with an argument
247 An option group Header
248 C? option C with an optional argument"
250 eval "$(echo "$OPTS_SPEC" | git rev-parse --parseopt -- "$@" || echo exit $?)"
256 In `--sq-quote` mode, 'git rev-parse' echoes on the standard output a
257 single line suitable for `sh(1)` `eval`. This line is made by
258 normalizing the arguments following `--sq-quote`. Nothing other than
259 quoting the arguments is done.
261 If you want command input to still be interpreted as usual by
262 'git rev-parse' before the output is shell quoted, see the `--sq`
269 $ cat >your-git-script.sh <<\EOF
271 args=$(git rev-parse --sq-quote "$@") # quote user-supplied arguments
272 command="git frotz -n24 $args" # and use it inside a handcrafted
277 $ sh your-git-script.sh "a b'c"
283 * Print the object name of the current commit:
286 $ git rev-parse --verify HEAD
289 * Print the commit object name from the revision in the $REV shell variable:
292 $ git rev-parse --verify $REV
295 This will error out if $REV is empty or not a valid revision.
300 $ git rev-parse --default master --verify $REV
303 but if $REV is empty, the commit object name from master will be printed.
308 Written by Linus Torvalds <torvalds@osdl.org> .
309 Junio C Hamano <gitster@pobox.com> and Pierre Habouzit <madcoder@debian.org>
313 Documentation by Junio C Hamano and the git-list <git@vger.kernel.org>.
317 Part of the linkgit:git[1] suite