6 git-diff - Show changes between commits, commit and working tree, etc
11 'git diff' [<common diff options>] <commit>{0,2} [--] [<path>...]
15 Show changes between two trees, a tree and the working tree, a
16 tree and the index file, or the index file and the working tree.
18 'git diff' [--options] [--] [<path>...]::
20 This form is to view the changes you made relative to
21 the index (staging area for the next commit). In other
22 words, the differences are what you _could_ tell git to
23 further add to the index but you still haven't. You can
24 stage these changes by using linkgit:git-add[1].
26 If exactly two paths are given and at least one points outside
27 the current repository, 'git diff' will compare the two files /
28 directories. This behavior can be forced by --no-index.
30 'git diff' [--options] --cached [<commit>] [--] [<path>...]::
32 This form is to view the changes you staged for the next
33 commit relative to the named <commit>. Typically you
34 would want comparison with the latest commit, so if you
35 do not give <commit>, it defaults to HEAD.
36 --staged is a synonym of --cached.
38 'git diff' [--options] <commit> [--] [<path>...]::
40 This form is to view the changes you have in your
41 working tree relative to the named <commit>. You can
42 use HEAD to compare it with the latest commit, or a
43 branch name to compare with the tip of a different
46 'git diff' [--options] <commit> <commit> [--] [<path>...]::
48 This is to view the changes between two arbitrary
51 'git diff' [--options] <commit>..<commit> [--] [<path>...]::
53 This is synonymous to the previous form. If <commit> on
54 one side is omitted, it will have the same effect as
57 'git diff' [--options] <commit>\...<commit> [--] [<path>...]::
59 This form is to view the changes on the branch containing
60 and up to the second <commit>, starting at a common ancestor
61 of both <commit>. "git diff A\...B" is equivalent to
62 "git diff $(git-merge-base A B) B". You can omit any one
63 of <commit>, which has the same effect as using HEAD instead.
65 Just in case if you are doing something exotic, it should be
66 noted that all of the <commit> in the above description, except
67 in the last two forms that use ".." notations, can be any
68 <tree>. The third form ('git diff <commit> <commit>') can also
69 be used to compare two <blob> objects.
71 For a more complete list of ways to spell <commit>, see
72 "SPECIFYING REVISIONS" section in linkgit:gitrevisions[7].
73 However, "diff" is about comparing two _endpoints_, not ranges,
74 and the range notations ("<commit>..<commit>" and
75 "<commit>\...<commit>") do not mean a range as defined in the
76 "SPECIFYING RANGES" section in linkgit:gitrevisions[7].
81 include::diff-options.txt[]
84 The <paths> parameters, when given, are used to limit
85 the diff to the named paths (you can give directory
86 names and get diff for all files under them).
89 include::diff-format.txt[]
94 Various ways to check your working tree::
98 $ git diff --cached <2>
102 <1> Changes in the working tree not yet staged for the next commit.
103 <2> Changes between the index and your last commit; what you
104 would be committing if you run "git commit" without "-a" option.
105 <3> Changes in the working tree since your last commit; what you
106 would be committing if you run "git commit -a"
108 Comparing with arbitrary commits::
112 $ git diff HEAD -- ./test <2>
113 $ git diff HEAD^ HEAD <3>
116 <1> Instead of using the tip of the current branch, compare with the
117 tip of "test" branch.
118 <2> Instead of comparing with the tip of "test" branch, compare with
119 the tip of the current branch, but limit the comparison to the
121 <3> Compare the version before the last commit and the last commit.
126 $ git diff topic master <1>
127 $ git diff topic..master <2>
128 $ git diff topic...master <3>
131 <1> Changes between the tips of the topic and the master branches.
133 <3> Changes that occurred on the master branch since when the topic
134 branch was started off it.
136 Limiting the diff output::
139 $ git diff --diff-filter=MRC <1>
140 $ git diff --name-status <2>
141 $ git diff arch/i386 include/asm-i386 <3>
144 <1> Show only modification, rename and copy, but not addition
146 <2> Show only names and the nature of change, but not actual
148 <3> Limit diff output to named subtrees.
150 Munging the diff output::
153 $ git diff --find-copies-harder -B -C <1>
157 <1> Spend extra cycles to find renames, copies and complete
158 rewrites (very expensive).
159 <2> Output diff in reverse.
164 linkgit:git-difftool[1],
166 linkgit:gitdiffcore[7],
167 linkgit:git-format-patch[1],
172 Written by Linus Torvalds <torvalds@osdl.org>
176 Documentation by Junio C Hamano and the git-list <git@vger.kernel.org>.
180 Part of the linkgit:git[1] suite