Documentation / git-help.txton commit Merge branch 'jk/hashcmp-optim-for-2.19' (86ef236)
   1git-help(1)
   2===========
   3
   4NAME
   5----
   6git-help - Display help information about Git
   7
   8SYNOPSIS
   9--------
  10[verse]
  11'git help' [-a|--all [--verbose]] [-g|--guide]
  12           [-i|--info|-m|--man|-w|--web] [COMMAND|GUIDE]
  13
  14DESCRIPTION
  15-----------
  16
  17With no options and no COMMAND or GUIDE given, the synopsis of the 'git'
  18command and a list of the most commonly used Git commands are printed
  19on the standard output.
  20
  21If the option `--all` or `-a` is given, all available commands are
  22printed on the standard output.
  23
  24If the option `--guide` or `-g` is given, a list of the useful
  25Git guides is also printed on the standard output.
  26
  27If a command, or a guide, is given, a manual page for that command or
  28guide is brought up. The 'man' program is used by default for this
  29purpose, but this can be overridden by other options or configuration
  30variables.
  31
  32Note that `git --help ...` is identical to `git help ...` because the
  33former is internally converted into the latter.
  34
  35To display the linkgit:git[1] man page, use `git help git`.
  36
  37This page can be displayed with 'git help help' or `git help --help`
  38
  39OPTIONS
  40-------
  41-a::
  42--all::
  43        Prints all the available commands on the standard output. This
  44        option overrides any given command or guide name.
  45        When used with `--verbose` print description for all recognized
  46        commands.
  47
  48-c::
  49--config::
  50        List all available configuration variables. This is a short
  51        summary of the list in linkgit:git-config[1].
  52
  53-g::
  54--guides::
  55        Prints a list of useful guides on the standard output. This
  56        option overrides any given command or guide name.
  57
  58-i::
  59--info::
  60        Display manual page for the command in the 'info' format. The
  61        'info' program will be used for that purpose.
  62
  63-m::
  64--man::
  65        Display manual page for the command in the 'man' format. This
  66        option may be used to override a value set in the
  67        `help.format` configuration variable.
  68+
  69By default the 'man' program will be used to display the manual page,
  70but the `man.viewer` configuration variable may be used to choose
  71other display programs (see below).
  72
  73-w::
  74--web::
  75        Display manual page for the command in the 'web' (HTML)
  76        format. A web browser will be used for that purpose.
  77+
  78The web browser can be specified using the configuration variable
  79`help.browser`, or `web.browser` if the former is not set. If none of
  80these config variables is set, the 'git web{litdd}browse' helper script
  81(called by 'git help') will pick a suitable default. See
  82linkgit:git-web{litdd}browse[1] for more information about this.
  83
  84CONFIGURATION VARIABLES
  85-----------------------
  86
  87help.format
  88~~~~~~~~~~~
  89
  90If no command-line option is passed, the `help.format` configuration
  91variable will be checked. The following values are supported for this
  92variable; they make 'git help' behave as their corresponding command-
  93line option:
  94
  95* "man" corresponds to '-m|--man',
  96* "info" corresponds to '-i|--info',
  97* "web" or "html" correspond to '-w|--web'.
  98
  99help.browser, web.browser and browser.<tool>.path
 100~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 101
 102The `help.browser`, `web.browser` and `browser.<tool>.path` will also
 103be checked if the 'web' format is chosen (either by command-line
 104option or configuration variable). See '-w|--web' in the OPTIONS
 105section above and linkgit:git-web{litdd}browse[1].
 106
 107man.viewer
 108~~~~~~~~~~
 109
 110The `man.viewer` configuration variable will be checked if the 'man'
 111format is chosen. The following values are currently supported:
 112
 113* "man": use the 'man' program as usual,
 114* "woman": use 'emacsclient' to launch the "woman" mode in emacs
 115(this only works starting with emacsclient versions 22),
 116* "konqueror": use 'kfmclient' to open the man page in a new konqueror
 117tab (see 'Note about konqueror' below).
 118
 119Values for other tools can be used if there is a corresponding
 120`man.<tool>.cmd` configuration entry (see below).
 121
 122Multiple values may be given to the `man.viewer` configuration
 123variable. Their corresponding programs will be tried in the order
 124listed in the configuration file.
 125
 126For example, this configuration:
 127
 128------------------------------------------------
 129        [man]
 130                viewer = konqueror
 131                viewer = woman
 132------------------------------------------------
 133
 134will try to use konqueror first. But this may fail (for example, if
 135DISPLAY is not set) and in that case emacs' woman mode will be tried.
 136
 137If everything fails, or if no viewer is configured, the viewer specified
 138in the `GIT_MAN_VIEWER` environment variable will be tried.  If that
 139fails too, the 'man' program will be tried anyway.
 140
 141man.<tool>.path
 142~~~~~~~~~~~~~~~
 143
 144You can explicitly provide a full path to your preferred man viewer by
 145setting the configuration variable `man.<tool>.path`. For example, you
 146can configure the absolute path to konqueror by setting
 147'man.konqueror.path'. Otherwise, 'git help' assumes the tool is
 148available in PATH.
 149
 150man.<tool>.cmd
 151~~~~~~~~~~~~~~
 152
 153When the man viewer, specified by the `man.viewer` configuration
 154variables, is not among the supported ones, then the corresponding
 155`man.<tool>.cmd` configuration variable will be looked up. If this
 156variable exists then the specified tool will be treated as a custom
 157command and a shell eval will be used to run the command with the man
 158page passed as arguments.
 159
 160Note about konqueror
 161~~~~~~~~~~~~~~~~~~~~
 162
 163When 'konqueror' is specified in the `man.viewer` configuration
 164variable, we launch 'kfmclient' to try to open the man page on an
 165already opened konqueror in a new tab if possible.
 166
 167For consistency, we also try such a trick if 'man.konqueror.path' is
 168set to something like 'A_PATH_TO/konqueror'. That means we will try to
 169launch 'A_PATH_TO/kfmclient' instead.
 170
 171If you really want to use 'konqueror', then you can use something like
 172the following:
 173
 174------------------------------------------------
 175        [man]
 176                viewer = konq
 177
 178        [man "konq"]
 179                cmd = A_PATH_TO/konqueror
 180------------------------------------------------
 181
 182Note about git config --global
 183~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 184
 185Note that all these configuration variables should probably be set
 186using the `--global` flag, for example like this:
 187
 188------------------------------------------------
 189$ git config --global help.format web
 190$ git config --global web.browser firefox
 191------------------------------------------------
 192
 193as they are probably more user specific than repository specific.
 194See linkgit:git-config[1] for more information about this.
 195
 196GIT
 197---
 198Part of the linkgit:git[1] suite