git-difftool(1) — Linux manual page


GIT-DIFFTOOL(1)                Git Manual                GIT-DIFFTOOL(1)

NAME         top

       git-difftool - Show changes using common diff tools

SYNOPSIS         top

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

DESCRIPTION         top

       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).

OPTIONS         top

       -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.

           Start showing the diff for the given path, the paths before
           it will move to end and output.

           Start showing the diff for the given path, skipping all the
           paths before it.

       -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

           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.

           git difftool's default behavior is create symlinks to the
           working tree when run in --dir-diff mode and the right-hand
           side of the comparison yields the same content as the file in
           the working tree.

           Specifying --no-symlinks instructs git difftool to create
           copies instead.  --no-symlinks is the default on Windows.

       -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, --[no-]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. The --no-gui
           option can be used to override this setting. If diff.guitool
           is not set, we will fallback in the order of merge.guitool,
           diff.tool, merge.tool until a tool is found.

           git-difftool invokes a diff tool individually on each file.
           Errors reported by the diff tool are ignored by default. Use
           --trust-exit-code to make git-difftool exit when an invoked
           diff tool returns a non-zero exit code.

           git-difftool will forward the exit code of the invoked tool
           when --trust-exit-code is used.

       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.

           Exit difftool if the invoked diff tool returns a non-zero
           exit status.

           See the --trust-exit-code option above for more details.

SEE ALSO         top

           Show changes between commits, commit and working tree, etc

           Run merge conflict resolution tools to resolve merge

           Get and set repository or global options

GIT         top

       Part of the git(1) suite

COLOPHON         top

       This page is part of the git (Git distributed version control
       system) project.  Information about the project can be found at
       ⟨⟩.  If you have a bug report for this manual
       page, see ⟨⟩.  This page was obtained
       from the project's upstream Git repository
       ⟨⟩ on 2021-08-27.  (At that time,
       the date of the most recent commit that was found in the
       repository was 2021-08-24.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to

Git         08/27/2021                GIT-DIFFTOOL(1)

Pages that refer to this page: git(1)git-config(1)git-diff(1)