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229 include::./stylesheets/xhtml11-manpage.css[]
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256 padding-left: 0.5em;
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259 <title>git-diff-files(1)</title>
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264 git-diff-files(1) Manual Page
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267 <div class="sectionbody">
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268 <p>git-diff-files -
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269 Compares files in the working tree and the index
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274 <div class="sectionbody">
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275 <p><em>git-diff-files</em> [-q] [<common diff options>] [<path>…]</p>
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277 <h2>DESCRIPTION</h2>
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278 <div class="sectionbody">
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279 <p>Compares the files in the working tree and the index. When paths
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280 are specified, compares only those named paths. Otherwise all
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281 entries in the index are compared. The output format is the
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282 same as "git-diff-index" and "git-diff-tree".</p>
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285 <div class="sectionbody">
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292 Generate patch (see section on generating patches)
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308 \0 line termination on output
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316 Show only names of changed files.
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324 Show only names and status of changed files.
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332 Instead of the first handful characters, show full
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333 object name of pre- and post-image blob on the "index"
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334 line when generating a patch format output.
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338 --abbrev[=<n>]
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342 Instead of showing the full 40-byte hexadecimal object
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343 name in diff-raw format output and diff-tree header
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344 lines, show only handful dhexigits prefix. This is
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345 independent of --full-index option above, which controls
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346 the diff-patch output format. Non default number of
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347 digits can be specified with --abbrev=<n>.
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355 Break complete rewrite changes into pairs of delete and create.
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371 Detect copies as well as renames.
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375 --find-copies-harder
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379 For performance reasons, by default, -C option finds copies only
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380 if the original file of the copy was modified in the same
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381 changeset. This flag makes the command
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382 inspect unmodified files as candidates for the source of
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383 copy. This is a very expensive operation for large
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384 projects, so use it with caution.
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392 -M and -C options require O(n^2) processing time where n
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393 is the number of potential rename/copy targets. This
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394 option prevents rename/copy detection from running if
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395 the number of rename/copy targets exceeds the specified
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404 Look for differences that contain the change in <string>.
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412 When -S finds a change, show all the changes in that
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413 changeset, not just the files that contain the change
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418 -O<orderfile>
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422 Output the patch in the order specified in the
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423 <orderfile>, which has one shell glob pattern per line.
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431 Swap two inputs; that is, show differences from index or
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432 on-disk file to tree contents.
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436 <p>For more detailed explanation on these common options, see also
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437 <a href="diffcore.html">diffcore documentation</a>.</p>
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440 -1 -2 -3 or --base --ours --theirs, and -0
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444 Diff against the "base" version, "our branch" or "their
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445 branch" respectively. With these options, diffs for
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446 merged entries are not shown.
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448 <p>The default is to diff against our branch (-2) and the
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449 cleanly resolved paths. The option -0 can be given to
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450 omit diff output for unmerged entries and just show "Unmerged".</p>
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457 Remain silent even on nonexisting files
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462 <h2>Output format</h2>
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463 <div class="sectionbody">
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464 <p>The output format from "git-diff-index", "git-diff-tree" and
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465 "git-diff-files" are very similar.</p>
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466 <p>These commands all compare two sets of things; what is
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467 compared differs:</p>
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470 git-diff-index <tree-ish>
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474 compares the <tree-ish> and the files on the filesystem.
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478 git-diff-index --cached <tree-ish>
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482 compares the <tree-ish> and the index.
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486 git-diff-tree [-r] <tree-ish-1> <tree-ish-2> [<pattern>…]
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490 compares the trees named by the two arguments.
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494 git-diff-files [<pattern>…]
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498 compares the index and the files on the filesystem.
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502 <p>An output line is formatted this way:</p>
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503 <div class="listingblock">
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504 <div class="content">
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505 <pre><tt>in-place edit :100644 100644 bcd1234... 0123456... M file0
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506 copy-edit :100644 100644 abcd123... 1234567... C68 file1 file2
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507 rename-edit :100644 100644 abcd123... 1234567... R86 file1 file3
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508 create :000000 100644 0000000... 1234567... A file4
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509 delete :100644 000000 1234567... 0000000... D file5
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510 unmerged :000000 000000 0000000... 0000000... U file6</tt></pre>
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512 <p>That is, from the left to the right:</p>
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521 mode for "src"; 000000 if creation or unmerged.
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531 mode for "dst"; 000000 if deletion or unmerged.
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541 sha1 for "src"; 0{40} if creation or unmerged.
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551 sha1 for "dst"; 0{40} if creation, unmerged or "look at work tree".
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561 status, followed by optional "score" number.
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566 a tab or a NUL when <em>-z</em> option is used.
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576 a tab or a NUL when <em>-z</em> option is used; only exists for C or R.
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581 path for "dst"; only exists for C or R.
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586 an LF or a NUL when <em>-z</em> option is used, to terminate the record.
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590 <p><sha1> is shown as all 0's if a file is new on the filesystem
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591 and it is out of sync with the index.</p>
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593 <div class="listingblock">
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594 <div class="content">
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595 <pre><tt>:100644 100644 5be4a4...... 000000...... M file.c</tt></pre>
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597 <p>When <tt>-z</tt> option is not used, TAB, LF, and backslash characters
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598 in pathnames are represented as <tt>\t</tt>, <tt>\n</tt>, and <tt>\\</tt>,
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601 <h2>Generating patches with -p</h2>
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602 <div class="sectionbody">
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603 <p>When "git-diff-index", "git-diff-tree", or "git-diff-files" are run
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604 with a <em>-p</em> option, they do not produce the output described above;
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605 instead they produce a patch file.</p>
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606 <p>The patch generation can be customized at two levels.</p>
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610 When the environment variable <em>GIT_EXTERNAL_DIFF</em> is not set,
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611 these commands internally invoke "diff" like this:
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613 <div class="literalblock">
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614 <div class="content">
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615 <pre><tt>diff -L a/<path> -L b/<path> -pu <old> <new></tt></pre>
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617 <p>For added files, <tt>/dev/null</tt> is used for <old>. For removed
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618 files, <tt>/dev/null</tt> is used for <new></p>
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619 <p>The "diff" formatting options can be customized via the
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620 environment variable <em>GIT_DIFF_OPTS</em>. For example, if you
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621 prefer context diff:</p>
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622 <div class="literalblock">
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623 <div class="content">
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624 <pre><tt>GIT_DIFF_OPTS=-c git-diff-index -p HEAD</tt></pre>
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629 When the environment variable <em>GIT_EXTERNAL_DIFF</em> is set, the
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630 program named by it is called, instead of the diff invocation
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633 <p>For a path that is added, removed, or modified,
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634 <em>GIT_EXTERNAL_DIFF</em> is called with 7 parameters:</p>
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635 <div class="literalblock">
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636 <div class="content">
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637 <pre><tt>path old-file old-hex old-mode new-file new-hex new-mode</tt></pre>
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640 <div class="hlist"><table>
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642 <td class="hlist1">
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643 <old|new>-file
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645 <td class="hlist2">
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646 are files GIT_EXTERNAL_DIFF can use to read the
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647 contents of <old|new>,
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651 <td class="hlist1">
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652 <old|new>-hex
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654 <td class="hlist2">
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655 are the 40-hexdigit SHA1 hashes,
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659 <td class="hlist1">
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660 <old|new>-mode
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662 <td class="hlist2">
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663 are the octal representation of the file modes.
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667 <p>The file parameters can point at the user's working file
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668 (e.g. <tt>new-file</tt> in "git-diff-files"), <tt>/dev/null</tt> (e.g. <tt>old-file</tt>
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669 when a new file is added), or a temporary file (e.g. <tt>old-file</tt> in the
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670 index). <em>GIT_EXTERNAL_DIFF</em> should not worry about unlinking the
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671 temporary file --- it is removed when <em>GIT_EXTERNAL_DIFF</em> exits.</p>
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674 <p>For a path that is unmerged, <em>GIT_EXTERNAL_DIFF</em> is called with 1
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675 parameter, <path>.</p>
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677 <h2>git specific extension to diff format</h2>
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678 <div class="sectionbody">
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679 <p>What -p option produces is slightly different from the
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680 traditional diff format.</p>
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684 It is preceeded with a "git diff" header, that looks like
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687 <div class="literalblock">
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688 <div class="content">
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689 <pre><tt>diff --git a/file1 b/file2</tt></pre>
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691 <p>The <tt>a/</tt> and <tt>b/</tt> filenames are the same unless rename/copy is
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692 involved. Especially, even for a creation or a deletion,
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693 <tt>/dev/null</tt> is _not_ used in place of <tt>a/</tt> or <tt>b/</tt> filenames.</p>
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694 <p>When rename/copy is involved, <tt>file1</tt> and <tt>file2</tt> show the
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695 name of the source file of the rename/copy and the name of
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696 the file that rename/copy produces, respectively.</p>
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700 It is followed by one or more extended header lines:
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702 <div class="literalblock">
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703 <div class="content">
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704 <pre><tt>old mode <mode>
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705 new mode <mode>
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706 deleted file mode <mode>
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707 new file mode <mode>
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708 copy from <path>
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709 copy to <path>
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710 rename from <path>
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711 rename to <path>
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712 similarity index <number>
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713 dissimilarity index <number>
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714 index <hash>..<hash> <mode></tt></pre>
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719 TAB, LF, and backslash characters in pathnames are
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720 represented as <tt>\t</tt>, <tt>\n</tt>, and <tt>\\</tt>, respectively.
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726 <div class="sectionbody">
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727 <p>Written by Linus Torvalds <torvalds@osdl.org></p>
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729 <h2>Documentation</h2>
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730 <div class="sectionbody">
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731 <p>Documentation by David Greaves, Junio C Hamano and the git-list <git@vger.kernel.org>.</p>
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734 <div class="sectionbody">
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735 <p>Part of the <a href="git.html">git(7)</a> suite</p>
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738 <div id="footer-text">
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739 Last updated 27-Dec-2005 00:16:00 PDT
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