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 571 <div id="header">
 572 <h1>
 573 git-difftool(1) Manual Page
 574 </h1>
 575 <h2>NAME</h2>
 576 <div class="sectionbody">
 577 <p>git-difftool -
 578    Show changes using common diff tools
 579 </p>
 580 </div>
 581 </div>
 582 <div id="content">
 583 <h2 id="_synopsis">SYNOPSIS</h2>
 584 <div class="sectionbody">
 585 <div class="verseblock">
 586 <div class="verseblock-content"><em>git difftool</em> [&lt;options&gt;] [&lt;commit&gt; [&lt;commit&gt;]] [--] [&lt;path&gt;&#8230;]</div>
 587 <div class="verseblock-attribution">
 588 </div></div>
 589 </div>
 590 <h2 id="_description">DESCRIPTION</h2>
 591 <div class="sectionbody">
 592 <div class="paragraph"><p><em>git difftool</em> is a git command that allows you to compare and edit files
 593 between revisions using common diff tools.  <em>git difftool</em> is a frontend
 594 to <em>git diff</em> and accepts the same options and arguments. See
 595 <a href="git-diff.html">git-diff(1)</a>.</p></div>
 596 </div>
 597 <h2 id="_options">OPTIONS</h2>
 598 <div class="sectionbody">
 599 <div class="dlist"><dl>
 600 <dt class="hdlist1">
 601 -y
 602 </dt>
 603 <dt class="hdlist1">
 604 --no-prompt
 605 </dt>
 606 <dd>
 607 <p>
 608         Do not prompt before launching a diff tool.
 609 </p>
 610 </dd>
 611 <dt class="hdlist1">
 612 --prompt
 613 </dt>
 614 <dd>
 615 <p>
 616         Prompt before each invocation of the diff tool.
 617         This is the default behaviour; the option is provided to
 618         override any configuration settings.
 619 </p>
 620 </dd>
 621 <dt class="hdlist1">
 622 -t &lt;tool&gt;
 623 </dt>
 624 <dt class="hdlist1">
 625 --tool=&lt;tool&gt;
 626 </dt>
 627 <dd>
 628 <p>
 629         Use the diff tool specified by &lt;tool&gt;.
 630         Valid merge tools are:
 631         araxis, bc3, diffuse, emerge, ecmerge, gvimdiff, kdiff3,
 632         kompare, meld, opendiff, p4merge, tkdiff, vimdiff and xxdiff.
 633 </p>
 634 <div class="paragraph"><p>If a diff tool is not specified, <em>git difftool</em>
 635 will use the configuration variable <tt>diff.tool</tt>.  If the
 636 configuration variable <tt>diff.tool</tt> is not set, <em>git difftool</em>
 637 will pick a suitable default.</p></div>
 638 <div class="paragraph"><p>You can explicitly provide a full path to the tool by setting the
 639 configuration variable <tt>difftool.&lt;tool&gt;.path</tt>. For example, you
 640 can configure the absolute path to kdiff3 by setting
 641 <tt>difftool.kdiff3.path</tt>. Otherwise, <em>git difftool</em> assumes the
 642 tool is available in PATH.</p></div>
 643 <div class="paragraph"><p>Instead of running one of the known diff tools,
 644 <em>git difftool</em> can be customized to run an alternative program
 645 by specifying the command line to invoke in a configuration
 646 variable <tt>difftool.&lt;tool&gt;.cmd</tt>.</p></div>
 647 <div class="paragraph"><p>When <em>git difftool</em> is invoked with this tool (either through the
 648 <tt>-t</tt> or <tt>--tool</tt> option or the <tt>diff.tool</tt> configuration variable)
 649 the configured command line will be invoked with the following
 650 variables available: <tt>$LOCAL</tt> is set to the name of the temporary
 651 file containing the contents of the diff pre-image and <tt>$REMOTE</tt>
 652 is set to the name of the temporary file containing the contents
 653 of the diff post-image.  <tt>$MERGED</tt> is the name of the file which is
 654 being compared. <tt>$BASE</tt> is provided for compatibility
 655 with custom merge tool commands and has the same value as <tt>$MERGED</tt>.</p></div>
 656 </dd>
 657 <dt class="hdlist1">
 658 -x &lt;command&gt;
 659 </dt>
 660 <dt class="hdlist1">
 661 --extcmd=&lt;command&gt;
 662 </dt>
 663 <dd>
 664 <p>
 665         Specify a custom command for viewing diffs.
 666         <em>git-difftool</em> ignores the configured defaults and runs
 667         <tt>$command $LOCAL $REMOTE</tt> when this option is specified.
 668         Additionally, <tt>$BASE</tt> is set in the environment.
 669 </p>
 670 </dd>
 671 <dt class="hdlist1">
 672 -g
 673 </dt>
 674 <dt class="hdlist1">
 675 --gui
 676 </dt>
 677 <dd>
 678 <p>
 679         When <em>git-difftool</em> is invoked with the <tt>-g</tt> or <tt>--gui</tt> option
 680         the default diff tool will be read from the configured
 681         <tt>diff.guitool</tt> variable instead of <tt>diff.tool</tt>.
 682 </p>
 683 </dd>
 684 </dl></div>
 685 <div class="paragraph"><p>See <a href="git-diff.html">git-diff(1)</a> for the full list of supported options.</p></div>
 686 </div>
 687 <h2 id="_config_variables">CONFIG VARIABLES</h2>
 688 <div class="sectionbody">
 689 <div class="paragraph"><p><em>git difftool</em> falls back to <em>git mergetool</em> config variables when the
 690 difftool equivalents have not been defined.</p></div>
 691 <div class="dlist"><dl>
 692 <dt class="hdlist1">
 693 diff.tool
 694 </dt>
 695 <dd>
 696 <p>
 697         The default diff tool to use.
 698 </p>
 699 </dd>
 700 <dt class="hdlist1">
 701 diff.guitool
 702 </dt>
 703 <dd>
 704 <p>
 705         The default diff tool to use when <tt>--gui</tt> is specified.
 706 </p>
 707 </dd>
 708 <dt class="hdlist1">
 709 difftool.&lt;tool&gt;.path
 710 </dt>
 711 <dd>
 712 <p>
 713         Override the path for the given tool.  This is useful in case
 714         your tool is not in the PATH.
 715 </p>
 716 </dd>
 717 <dt class="hdlist1">
 718 difftool.&lt;tool&gt;.cmd
 719 </dt>
 720 <dd>
 721 <p>
 722         Specify the command to invoke the specified diff tool.
 723 </p>
 724 <div class="paragraph"><p>See the <tt>--tool=&lt;tool&gt;</tt> option above for more details.</p></div>
 725 </dd>
 726 <dt class="hdlist1">
 727 difftool.prompt
 728 </dt>
 729 <dd>
 730 <p>
 731         Prompt before each invocation of the diff tool.
 732 </p>
 733 </dd>
 734 </dl></div>
 735 </div>
 736 <h2 id="_see_also">SEE ALSO</h2>
 737 <div class="sectionbody">
 738 <div class="dlist"><dl>
 739 <dt class="hdlist1">
 740 <a href="git-diff.html">git-diff(1)</a>
 741 </dt>
 742 <dd>
 743 <p>
 744          Show changes between commits, commit and working tree, etc
 745 </p>
 746 </dd>
 747 <dt class="hdlist1">
 748 <a href="git-mergetool.html">git-mergetool(1)</a>
 749 </dt>
 750 <dd>
 751 <p>
 752         Run merge conflict resolution tools to resolve merge conflicts
 753 </p>
 754 </dd>
 755 <dt class="hdlist1">
 756 <a href="git-config.html">git-config(1)</a>
 757 </dt>
 758 <dd>
 759 <p>
 760          Get and set repository or global options
 761 </p>
 762 </dd>
 763 </dl></div>
 764 </div>
 765 <h2 id="_git">GIT</h2>
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