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187 lines
5.4 KiB
187 lines
5.4 KiB
git-diff(1) |
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=========== |
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NAME |
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---- |
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git-diff - Show changes between commits, commit and working tree, etc |
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SYNOPSIS |
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-------- |
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[verse] |
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'git diff' [options] [<commit>] [--] [<path>...] |
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'git diff' [options] --cached [<commit>] [--] [<path>...] |
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'git diff' [options] <commit> <commit> [--] [<path>...] |
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'git diff' [options] [--no-index] [--] <path> <path> |
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DESCRIPTION |
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----------- |
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Show changes between the working tree and the index or a tree, changes |
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between the index and a tree, changes between two trees, or changes |
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between two files on disk. |
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'git diff' [--options] [--] [<path>...]:: |
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This form is to view the changes you made relative to |
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the index (staging area for the next commit). In other |
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words, the differences are what you _could_ tell git to |
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further add to the index but you still haven't. You can |
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stage these changes by using linkgit:git-add[1]. |
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+ |
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If exactly two paths are given and at least one points outside |
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the current repository, 'git diff' will compare the two files / |
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directories. This behavior can be forced by --no-index. |
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'git diff' [--options] --cached [<commit>] [--] [<path>...]:: |
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This form is to view the changes you staged for the next |
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commit relative to the named <commit>. Typically you |
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would want comparison with the latest commit, so if you |
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do not give <commit>, it defaults to HEAD. |
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If HEAD does not exist (e.g. unborned branches) and |
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<commit> is not given, it shows all staged changes. |
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--staged is a synonym of --cached. |
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'git diff' [--options] <commit> [--] [<path>...]:: |
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This form is to view the changes you have in your |
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working tree relative to the named <commit>. You can |
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use HEAD to compare it with the latest commit, or a |
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branch name to compare with the tip of a different |
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branch. |
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'git diff' [--options] <commit> <commit> [--] [<path>...]:: |
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This is to view the changes between two arbitrary |
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<commit>. |
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'git diff' [--options] <commit>..<commit> [--] [<path>...]:: |
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This is synonymous to the previous form. If <commit> on |
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one side is omitted, it will have the same effect as |
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using HEAD instead. |
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'git diff' [--options] <commit>\...<commit> [--] [<path>...]:: |
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This form is to view the changes on the branch containing |
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and up to the second <commit>, starting at a common ancestor |
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of both <commit>. "git diff A\...B" is equivalent to |
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"git diff $(git-merge-base A B) B". You can omit any one |
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of <commit>, which has the same effect as using HEAD instead. |
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Just in case if you are doing something exotic, it should be |
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noted that all of the <commit> in the above description, except |
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in the last two forms that use ".." notations, can be any |
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<tree>. The third form ('git diff <commit> <commit>') can also |
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be used to compare two <blob> objects. |
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For a more complete list of ways to spell <commit>, see |
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"SPECIFYING REVISIONS" section in linkgit:gitrevisions[7]. |
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However, "diff" is about comparing two _endpoints_, not ranges, |
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and the range notations ("<commit>..<commit>" and |
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"<commit>\...<commit>") do not mean a range as defined in the |
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"SPECIFYING RANGES" section in linkgit:gitrevisions[7]. |
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OPTIONS |
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------- |
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:git-diff: 1 |
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include::diff-options.txt[] |
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<path>...:: |
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The <paths> parameters, when given, are used to limit |
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the diff to the named paths (you can give directory |
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names and get diff for all files under them). |
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include::diff-format.txt[] |
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EXAMPLES |
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-------- |
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Various ways to check your working tree:: |
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------------ |
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$ git diff <1> |
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$ git diff --cached <2> |
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$ git diff HEAD <3> |
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------------ |
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<1> Changes in the working tree not yet staged for the next commit. |
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<2> Changes between the index and your last commit; what you |
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would be committing if you run "git commit" without "-a" option. |
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<3> Changes in the working tree since your last commit; what you |
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would be committing if you run "git commit -a" |
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Comparing with arbitrary commits:: |
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+ |
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------------ |
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$ git diff test <1> |
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$ git diff HEAD -- ./test <2> |
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$ git diff HEAD^ HEAD <3> |
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------------ |
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<1> Instead of using the tip of the current branch, compare with the |
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tip of "test" branch. |
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<2> Instead of comparing with the tip of "test" branch, compare with |
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the tip of the current branch, but limit the comparison to the |
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file "test". |
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<3> Compare the version before the last commit and the last commit. |
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Comparing branches:: |
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+ |
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------------ |
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$ git diff topic master <1> |
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$ git diff topic..master <2> |
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$ git diff topic...master <3> |
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------------ |
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<1> Changes between the tips of the topic and the master branches. |
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<2> Same as above. |
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<3> Changes that occurred on the master branch since when the topic |
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branch was started off it. |
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Limiting the diff output:: |
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+ |
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------------ |
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$ git diff --diff-filter=MRC <1> |
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$ git diff --name-status <2> |
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$ git diff arch/i386 include/asm-i386 <3> |
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------------ |
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<1> Show only modification, rename and copy, but not addition |
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nor deletion. |
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<2> Show only names and the nature of change, but not actual |
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diff output. |
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<3> Limit diff output to named subtrees. |
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Munging the diff output:: |
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------------ |
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$ git diff --find-copies-harder -B -C <1> |
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$ git diff -R <2> |
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------------ |
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<1> Spend extra cycles to find renames, copies and complete |
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rewrites (very expensive). |
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<2> Output diff in reverse. |
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SEE ALSO |
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-------- |
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diff(1), |
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linkgit:git-difftool[1], |
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linkgit:git-log[1], |
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linkgit:gitdiffcore[7], |
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linkgit:git-format-patch[1], |
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linkgit:git-apply[1] |
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Author |
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------ |
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Written by Linus Torvalds <torvalds@osdl.org> |
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Documentation |
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-------------- |
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Documentation by Junio C Hamano and the git-list <git@vger.kernel.org>. |
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GIT |
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--- |
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Part of the linkgit:git[1] suite
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