man pages section 1: User Commands

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Updated: July 2014

git-difftool (1)


git-difftool - Show changes using common diff tools


git difftool [<options>] [<commit> [<commit>]] [--] [<path>...]


Git Manual                                        GIT-DIFFTOOL(1)

     git-difftool - Show changes using common diff tools

     git difftool [<options>] [<commit> [<commit>]] [--] [<path>...]

     git difftool is a git command that allows you to compare and
     edit files between revisions using common diff tools. git
     difftool is a frontend to git diff and accepts the same
     options and arguments. See git-diff(1).

     -y, --no-prompt
         Do not prompt before launching a diff tool.

         Prompt before each invocation of the diff tool. This is
         the default behaviour; the option is provided to
         override any configuration settings.

     -t <tool>, --tool=<tool>
         Use the diff tool specified by <tool>. Valid diff tools
         are: araxis, bc3, diffuse, emerge, ecmerge, gvimdiff,
         kdiff3, kompare, meld, opendiff, p4merge, tkdiff,
         vimdiff and xxdiff.

         If a diff tool is not specified, git difftool will use
         the configuration variable diff.tool. If the
         configuration variable diff.tool is not set, git
         difftool will pick a suitable default.

         You can explicitly provide a full path to the tool by
         setting the configuration variable difftool.<tool>.path.
         For example, you can configure the absolute path to
         kdiff3 by setting difftool.kdiff3.path. Otherwise, git
         difftool assumes the tool is available in PATH.

         Instead of running one of the known diff tools, git
         difftool can be customized to run an alternative program
         by specifying the command line to invoke in a
         configuration variable difftool.<tool>.cmd.

         When git difftool is invoked with this tool (either
         through the -t or --tool option or the diff.tool
         configuration variable) the configured command line will
         be invoked with the following variables available:
         $LOCAL is set to the name of the temporary file
         containing the contents of the diff pre-image and
         $REMOTE is set to the name of the temporary file
         containing the contents of the diff post-image.  $MERGED

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Git Manual                                        GIT-DIFFTOOL(1)

         is the name of the file which is being compared.  $BASE
         is provided for compatibility with custom merge tool
         commands and has the same value as $MERGED.

     -x <command>, --extcmd=<command>
         Specify a custom command for viewing diffs.
         git-difftool ignores the configured defaults and runs
         $command $LOCAL $REMOTE when this option is specified.
         Additionally, $BASE is set in the environment.

     -g, --gui
         When git-difftool is invoked with the -g or --gui option
         the default diff tool will be read from the configured
         diff.guitool variable instead of diff.tool.

     See git-diff(1) for the full list of supported options.

     git difftool falls back to git mergetool config variables
     when the difftool equivalents have not been defined.

         The default diff tool to use.

         The default diff tool to use when --gui is specified.

         Override the path for the given tool. This is useful in
         case your tool is not in the PATH.

         Specify the command to invoke the specified diff tool.

         See the --tool=<tool> option above for more details.

         Prompt before each invocation of the diff tool.

     See attributes(5) for descriptions of the following

     |Availability   | developer/versioning/git |
     |Stability      | Uncommitted              |

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Git Manual                                        GIT-DIFFTOOL(1)

         Show changes between commits, commit and working tree,

         Run merge conflict resolution tools to resolve merge

         Get and set repository or global options

     Part of the git(1) suite

     This software was built from source available at  The original
     community source was downloaded from  http://git-

     Further information about this software can be found on the
     open source community website at

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