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GIT-DIFFTOOL(1)                   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).

       -d, --dir-diff
           Copy the modified files to a temporary location and perform a directory diff on them. This mode never
           prompts before launching the diff tool.

       -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 values include emerge, kompare, meld, and vimdiff. Run git
           difftool --tool-help for the list of valid <tool> settings.

           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 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.

           Print a list of diff tools that may be used with --tool.

       -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.

           Show changes between commits, commit and working tree, etc

           Run merge conflict resolution tools to resolve merge conflicts

           Get and set repository or global options

       Part of the git(1) suite

Git                      08/29/2012                   GIT-DIFFTOOL(1)