1 git-diff(1)
2 ===========
4 NAME
5 ----
6 git-diff - Show changes between commits, commit and working tree, etc
9 SYNOPSIS
10 --------
11 'git-diff' [<common diff options>] <commit>{0,2} [--] [<path>...]
13 DESCRIPTION
14 -----------
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 gitlink:git-add[1].
26 If exactly two paths are given, and at least one is untracked,
27 compare the two files / directories. This behavior can be
28 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.
37 'git-diff' [--options] <commit> [--] [<path>...]::
39 This form is to view the changes you have in your
40 working tree relative to the named <commit>. You can
41 use HEAD to compare it with the latest commit, or a
42 branch name to compare with the tip of a different
43 branch.
45 'git-diff' [--options] <commit> <commit> [--] [<path>...]::
47 This form is to view the changes between two <commit>,
48 for example, tips of two branches.
50 Just in case if you are doing something exotic, it should be
51 noted that all of the <commit> in the above description can be
52 any <tree-ish>.
54 For a more complete list of ways to spell <commit>, see
55 "SPECIFYING REVISIONS" section in gitlink:git-rev-parse[1].
58 OPTIONS
59 -------
60 include::diff-options.txt[]
62 <path>...::
63 The <paths> parameters, when given, are used to limit
64 the diff to the named paths (you can give directory
65 names and get diff for all files under them).
68 EXAMPLES
69 --------
71 Various ways to check your working tree::
72 +
73 ------------
74 $ git diff <1>
75 $ git diff --cached <2>
76 $ git diff HEAD <3>
77 ------------
78 +
79 <1> changes in the working tree not yet staged for the next commit.
80 <2> changes between the index and your last commit; what you
81 would be committing if you run "git commit" without "-a" option.
82 <3> changes in the working tree since your last commit; what you
83 would be committing if you run "git commit -a"
85 Comparing with arbitrary commits::
86 +
87 ------------
88 $ git diff test <1>
89 $ git diff HEAD -- ./test <2>
90 $ git diff HEAD^ HEAD <3>
91 ------------
92 +
93 <1> instead of using the tip of the current branch, compare with the
94 tip of "test" branch.
95 <2> instead of comparing with the tip of "test" branch, compare with
96 the tip of the current branch, but limit the comparison to the
97 file "test".
98 <3> compare the version before the last commit and the last commit.
101 Limiting the diff output::
102 +
103 ------------
104 $ git diff --diff-filter=MRC <1>
105 $ git diff --name-status -r <2>
106 $ git diff arch/i386 include/asm-i386 <3>
107 ------------
108 +
109 <1> show only modification, rename and copy, but not addition
110 nor deletion.
111 <2> show only names and the nature of change, but not actual
112 diff output. --name-status disables usual patch generation
113 which in turn also disables recursive behavior, so without -r
114 you would only see the directory name if there is a change in a
115 file in a subdirectory.
116 <3> limit diff output to named subtrees.
118 Munging the diff output::
119 +
120 ------------
121 $ git diff --find-copies-harder -B -C <1>
122 $ git diff -R <2>
123 ------------
124 +
125 <1> spend extra cycles to find renames, copies and complete
126 rewrites (very expensive).
127 <2> output diff in reverse.
130 Author
131 ------
132 Written by Linus Torvalds <torvalds@osdl.org>
134 Documentation
135 --------------
136 Documentation by Junio C Hamano and the git-list <git@vger.kernel.org>.
138 GIT
139 ---
140 Part of the gitlink:git[7] suite