6 git-diff - Show changes between commits, commit and working tree, etc
12 'git diff' [options] [<commit>] [--] [<path>...]
13 'git diff' [options] --cached [<commit>] [--] [<path>...]
14 'git diff' [options] <commit> <commit> [--] [<path>...]
15 'git diff' [options] [--no-index] [--] <path> <path>
19 Show changes between the working tree and the index or a tree, changes
20 between the index and a tree, changes between two trees, or changes
21 between two files on disk.
23 'git diff' [--options] [--] [<path>...]::
25 This form is to view the changes you made relative to
26 the index (staging area for the next commit). In other
27 words, the differences are what you _could_ tell git to
28 further add to the index but you still haven't. You can
29 stage these changes by using linkgit:git-add[1].
31 If exactly two paths are given and at least one points outside
32 the current repository, 'git diff' will compare the two files /
33 directories. This behavior can be forced by --no-index.
35 'git diff' [--options] --cached [<commit>] [--] [<path>...]::
37 This form is to view the changes you staged for the next
38 commit relative to the named <commit>. Typically you
39 would want comparison with the latest commit, so if you
40 do not give <commit>, it defaults to HEAD.
41 --staged is a synonym of --cached.
43 'git diff' [--options] <commit> [--] [<path>...]::
45 This form is to view the changes you have in your
46 working tree relative to the named <commit>. You can
47 use HEAD to compare it with the latest commit, or a
48 branch name to compare with the tip of a different
51 'git diff' [--options] <commit> <commit> [--] [<path>...]::
53 This is to view the changes between two arbitrary
56 'git diff' [--options] <commit>..<commit> [--] [<path>...]::
58 This is synonymous to the previous form. If <commit> on
59 one side is omitted, it will have the same effect as
62 'git diff' [--options] <commit>\...<commit> [--] [<path>...]::
64 This form is to view the changes on the branch containing
65 and up to the second <commit>, starting at a common ancestor
66 of both <commit>. "git diff A\...B" is equivalent to
67 "git diff $(git-merge-base A B) B". You can omit any one
68 of <commit>, which has the same effect as using HEAD instead.
70 Just in case if you are doing something exotic, it should be
71 noted that all of the <commit> in the above description, except
72 in the last two forms that use ".." notations, can be any
73 <tree>. The third form ('git diff <commit> <commit>') can also
74 be used to compare two <blob> objects.
76 For a more complete list of ways to spell <commit>, see
77 "SPECIFYING REVISIONS" section in linkgit:gitrevisions[7].
78 However, "diff" is about comparing two _endpoints_, not ranges,
79 and the range notations ("<commit>..<commit>" and
80 "<commit>\...<commit>") do not mean a range as defined in the
81 "SPECIFYING RANGES" section in linkgit:gitrevisions[7].
86 include::diff-options.txt[]
89 The <paths> parameters, when given, are used to limit
90 the diff to the named paths (you can give directory
91 names and get diff for all files under them).
94 include::diff-format.txt[]
99 Various ways to check your working tree::
103 $ git diff --cached <2>
107 <1> Changes in the working tree not yet staged for the next commit.
108 <2> Changes between the index and your last commit; what you
109 would be committing if you run "git commit" without "-a" option.
110 <3> Changes in the working tree since your last commit; what you
111 would be committing if you run "git commit -a"
113 Comparing with arbitrary commits::
117 $ git diff HEAD -- ./test <2>
118 $ git diff HEAD^ HEAD <3>
121 <1> Instead of using the tip of the current branch, compare with the
122 tip of "test" branch.
123 <2> Instead of comparing with the tip of "test" branch, compare with
124 the tip of the current branch, but limit the comparison to the
126 <3> Compare the version before the last commit and the last commit.
131 $ git diff topic master <1>
132 $ git diff topic..master <2>
133 $ git diff topic...master <3>
136 <1> Changes between the tips of the topic and the master branches.
138 <3> Changes that occurred on the master branch since when the topic
139 branch was started off it.
141 Limiting the diff output::
144 $ git diff --diff-filter=MRC <1>
145 $ git diff --name-status <2>
146 $ git diff arch/i386 include/asm-i386 <3>
149 <1> Show only modification, rename and copy, but not addition
151 <2> Show only names and the nature of change, but not actual
153 <3> Limit diff output to named subtrees.
155 Munging the diff output::
158 $ git diff --find-copies-harder -B -C <1>
162 <1> Spend extra cycles to find renames, copies and complete
163 rewrites (very expensive).
164 <2> Output diff in reverse.
169 linkgit:git-difftool[1],
171 linkgit:gitdiffcore[7],
172 linkgit:git-format-patch[1],
177 Written by Linus Torvalds <torvalds@osdl.org>
181 Documentation by Junio C Hamano and the git-list <git@vger.kernel.org>.
185 Part of the linkgit:git[1] suite