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215a7ad1 JH |
1 | git-diff(1) |
2 | =========== | |
7fc9d69f JH |
3 | |
4 | NAME | |
5 | ---- | |
7bd7f280 | 6 | git-diff - Show changes between commits, commit and working tree, etc |
7fc9d69f JH |
7 | |
8 | ||
9 | SYNOPSIS | |
10 | -------- | |
49bd56a5 | 11 | [verse] |
de613050 | 12 | 'git diff' [<options>] [<commit>] [--] [<path>...] |
0f5a1d44 | 13 | 'git diff' [<options>] --cached [--merge-base] [<commit>] [--] [<path>...] |
3d09c228 | 14 | 'git diff' [<options>] [--merge-base] <commit> [<commit>...] <commit> [--] [<path>...] |
b7e10b2c | 15 | 'git diff' [<options>] <commit>...<commit> [--] [<path>...] |
de613050 RD |
16 | 'git diff' [<options>] <blob> <blob> |
17 | 'git diff' [<options>] --no-index [--] <path> <path> | |
7fc9d69f JH |
18 | |
19 | DESCRIPTION | |
20 | ----------- | |
49bd56a5 | 21 | Show changes between the working tree and the index or a tree, changes |
b7e10b2c CT |
22 | between the index and a tree, changes between two trees, changes resulting |
23 | from a merge, changes between two blob objects, or changes between two | |
24 | files on disk. | |
35ef3a4c | 25 | |
de613050 | 26 | 'git diff' [<options>] [--] [<path>...]:: |
dfa2f22f | 27 | |
f5e6b89b JH |
28 | This form is to view the changes you made relative to |
29 | the index (staging area for the next commit). In other | |
2de9b711 | 30 | words, the differences are what you _could_ tell Git to |
f5e6b89b | 31 | further add to the index but you still haven't. You can |
5162e697 | 32 | stage these changes by using linkgit:git-add[1]. |
286bc123 | 33 | |
de613050 | 34 | 'git diff' [<options>] --no-index [--] <path> <path>:: |
286bc123 JH |
35 | |
36 | This form is to compare the given two paths on the | |
37 | filesystem. You can omit the `--no-index` option when | |
38 | running the command in a working tree controlled by Git and | |
39 | at least one of the paths points outside the working tree, | |
40 | or when running the command outside a working tree | |
0115e5d9 | 41 | controlled by Git. This form implies `--exit-code`. |
d516c2d1 | 42 | |
0f5a1d44 | 43 | 'git diff' [<options>] --cached [--merge-base] [<commit>] [--] [<path>...]:: |
f5e6b89b JH |
44 | |
45 | This form is to view the changes you staged for the next | |
ce054545 | 46 | commit relative to the named <commit>. Typically you |
f5e6b89b JH |
47 | would want comparison with the latest commit, so if you |
48 | do not give <commit>, it defaults to HEAD. | |
5fe8f49b | 49 | If HEAD does not exist (e.g. unborn branches) and |
a2b7a3b3 | 50 | <commit> is not given, it shows all staged changes. |
2baf1850 | 51 | --staged is a synonym of --cached. |
0f5a1d44 DL |
52 | + |
53 | If --merge-base is given, instead of using <commit>, use the merge base | |
54 | of <commit> and HEAD. `git diff --merge-base A` is equivalent to | |
55 | `git diff $(git merge-base A HEAD)`. | |
f5e6b89b | 56 | |
de613050 | 57 | 'git diff' [<options>] <commit> [--] [<path>...]:: |
f5e6b89b JH |
58 | |
59 | This form is to view the changes you have in your | |
60 | working tree relative to the named <commit>. You can | |
61 | use HEAD to compare it with the latest commit, or a | |
62 | branch name to compare with the tip of a different | |
63 | branch. | |
64 | ||
3d09c228 | 65 | 'git diff' [<options>] [--merge-base] <commit> <commit> [--] [<path>...]:: |
f5e6b89b | 66 | |
2b9232cc MH |
67 | This is to view the changes between two arbitrary |
68 | <commit>. | |
3d09c228 DL |
69 | + |
70 | If --merge-base is given, use the merge base of the two commits for the | |
71 | "before" side. `git diff --merge-base A B` is equivalent to | |
72 | `git diff $(git merge-base A B) B`. | |
2b9232cc | 73 | |
bc5482e9 | 74 | 'git diff' [<options>] <commit> <commit>... <commit> [--] [<path>...]:: |
b7e10b2c CT |
75 | |
76 | This form is to view the results of a merge commit. The first | |
77 | listed <commit> must be the merge itself; the remaining two or | |
78 | more commits should be its parents. A convenient way to produce | |
a8fa6a08 | 79 | the desired set of revisions is to use the `^@` suffix. |
b7e10b2c CT |
80 | For instance, if `master` names a merge commit, `git diff master |
81 | master^@` gives the same combined diff as `git show master`. | |
82 | ||
78b76d31 MÅ |
83 | 'git diff' [<options>] <commit>..<commit> [--] [<path>...]:: |
84 | ||
a8fa6a08 | 85 | This is synonymous to the earlier form (without the `..`) for |
78b76d31 MÅ |
86 | viewing the changes between two arbitrary <commit>. If <commit> on |
87 | one side is omitted, it will have the same effect as | |
88 | using HEAD instead. | |
89 | ||
de613050 | 90 | 'git diff' [<options>] <commit>\...<commit> [--] [<path>...]:: |
2b9232cc MH |
91 | |
92 | This form is to view the changes on the branch containing | |
93 | and up to the second <commit>, starting at a common ancestor | |
a8fa6a08 DL |
94 | of both <commit>. `git diff A...B` is equivalent to |
95 | `git diff $(git merge-base A B) B`. You can omit any one | |
2b9232cc | 96 | of <commit>, which has the same effect as using HEAD instead. |
f5e6b89b | 97 | |
ca8ed443 | 98 | Just in case you are doing something exotic, it should be |
0c783f66 | 99 | noted that all of the <commit> in the above description, except |
0f5a1d44 DL |
100 | in the `--merge-base` case and in the last two forms that use `..` |
101 | notations, can be any <tree>. | |
dfa2f22f | 102 | |
41a5564e | 103 | For a more complete list of ways to spell <commit>, see |
9d83e382 | 104 | "SPECIFYING REVISIONS" section in linkgit:gitrevisions[7]. |
2b9232cc | 105 | However, "diff" is about comparing two _endpoints_, not ranges, |
a8fa6a08 DL |
106 | and the range notations (`<commit>..<commit>` and |
107 | `<commit>...<commit>`) do not mean a range as defined in the | |
9d83e382 | 108 | "SPECIFYING RANGES" section in linkgit:gitrevisions[7]. |
7fc9d69f | 109 | |
de613050 | 110 | 'git diff' [<options>] <blob> <blob>:: |
d7747bd5 KB |
111 | |
112 | This form is to view the differences between the raw | |
113 | contents of two blob objects. | |
114 | ||
7fc9d69f JH |
115 | OPTIONS |
116 | ------- | |
c1a95fa6 | 117 | :git-diff: 1 |
f5e6b89b | 118 | include::diff-options.txt[] |
35ef3a4c | 119 | |
47242cd1 AH |
120 | -1 --base:: |
121 | -2 --ours:: | |
122 | -3 --theirs:: | |
123 | Compare the working tree with the "base" version (stage #1), | |
124 | "our branch" (stage #2) or "their branch" (stage #3). The | |
125 | index contains these stages only for unmerged entries i.e. | |
126 | while resolving conflicts. See linkgit:git-read-tree[1] | |
127 | section "3-Way Merge" for detailed information. | |
128 | ||
129 | -0:: | |
130 | Omit diff output for unmerged entries and just show | |
131 | "Unmerged". Can be used only when comparing the working tree | |
132 | with the index. | |
133 | ||
35ef3a4c | 134 | <path>...:: |
f5e6b89b JH |
135 | The <paths> parameters, when given, are used to limit |
136 | the diff to the named paths (you can give directory | |
137 | names and get diff for all files under them). | |
7fc9d69f | 138 | |
f552e51e | 139 | |
9e6c7230 | 140 | include::diff-format.txt[] |
7fc9d69f | 141 | |
803f498c JH |
142 | EXAMPLES |
143 | -------- | |
144 | ||
145 | Various ways to check your working tree:: | |
146 | + | |
147 | ------------ | |
48aeecdc | 148 | $ git diff <1> |
f2dd1c9a | 149 | $ git diff --cached <2> |
48aeecdc SE |
150 | $ git diff HEAD <3> |
151 | ------------ | |
152 | + | |
434e6ef8 SH |
153 | <1> Changes in the working tree not yet staged for the next commit. |
154 | <2> Changes between the index and your last commit; what you | |
a8fa6a08 | 155 | would be committing if you run `git commit` without `-a` option. |
434e6ef8 | 156 | <3> Changes in the working tree since your last commit; what you |
a8fa6a08 | 157 | would be committing if you run `git commit -a` |
803f498c JH |
158 | |
159 | Comparing with arbitrary commits:: | |
160 | + | |
161 | ------------ | |
48aeecdc SE |
162 | $ git diff test <1> |
163 | $ git diff HEAD -- ./test <2> | |
164 | $ git diff HEAD^ HEAD <3> | |
165 | ------------ | |
166 | + | |
434e6ef8 | 167 | <1> Instead of using the tip of the current branch, compare with the |
ba170517 | 168 | tip of "test" branch. |
434e6ef8 | 169 | <2> Instead of comparing with the tip of "test" branch, compare with |
ba170517 JNA |
170 | the tip of the current branch, but limit the comparison to the |
171 | file "test". | |
434e6ef8 | 172 | <3> Compare the version before the last commit and the last commit. |
803f498c | 173 | |
2b9232cc MH |
174 | Comparing branches:: |
175 | + | |
176 | ------------ | |
177 | $ git diff topic master <1> | |
178 | $ git diff topic..master <2> | |
179 | $ git diff topic...master <3> | |
180 | ------------ | |
181 | + | |
182 | <1> Changes between the tips of the topic and the master branches. | |
183 | <2> Same as above. | |
06ada152 | 184 | <3> Changes that occurred on the master branch since when the topic |
ba170517 | 185 | branch was started off it. |
803f498c JH |
186 | |
187 | Limiting the diff output:: | |
188 | + | |
189 | ------------ | |
48aeecdc | 190 | $ git diff --diff-filter=MRC <1> |
90ae710e | 191 | $ git diff --name-status <2> |
48aeecdc SE |
192 | $ git diff arch/i386 include/asm-i386 <3> |
193 | ------------ | |
194 | + | |
a58088ab | 195 | <1> Show only modification, rename, and copy, but not addition |
ba170517 | 196 | or deletion. |
434e6ef8 | 197 | <2> Show only names and the nature of change, but not actual |
ba170517 | 198 | diff output. |
434e6ef8 | 199 | <3> Limit diff output to named subtrees. |
803f498c JH |
200 | |
201 | Munging the diff output:: | |
202 | + | |
203 | ------------ | |
48aeecdc SE |
204 | $ git diff --find-copies-harder -B -C <1> |
205 | $ git diff -R <2> | |
206 | ------------ | |
207 | + | |
434e6ef8 | 208 | <1> Spend extra cycles to find renames, copies and complete |
ba170517 | 209 | rewrites (very expensive). |
434e6ef8 | 210 | <2> Output diff in reverse. |
803f498c | 211 | |
3bdfd443 DA |
212 | SEE ALSO |
213 | -------- | |
b77134b0 JN |
214 | diff(1), |
215 | linkgit:git-difftool[1], | |
216 | linkgit:git-log[1], | |
217 | linkgit:gitdiffcore[7], | |
218 | linkgit:git-format-patch[1], | |
b7e10b2c CT |
219 | linkgit:git-apply[1], |
220 | linkgit:git-show[1] | |
803f498c | 221 | |
7fc9d69f JH |
222 | GIT |
223 | --- | |
9e1f0a85 | 224 | Part of the linkgit:git[1] suite |