git-diff-tree(1) ================ NAME ---- git-diff-tree - Compares the content and mode of blobs found via two tree objects SYNOPSIS -------- [verse] 'git-diff-tree' [--stdin] [-m] [-s] [-v] [--no-commit-id] [--pretty] [-t] [-r] [-c | --cc] [--root] [] [] [...] DESCRIPTION ----------- Compares the content and mode of the blobs found via two tree objects. If there is only one given, the commit is compared with its parents (see --stdin below). Note that "git-diff-tree" can use the tree encapsulated in a commit object. OPTIONS ------- include::diff-options.txt[] :: The id of a tree object. ...:: If provided, the results are limited to a subset of files matching one of these prefix strings. i.e., file matches `/^||.../` Note that this parameter does not provide any wildcard or regexp features. -r:: recurse into sub-trees -t:: show tree entry itself as well as subtrees. Implies -r. --root:: When '--root' is specified the initial commit will be showed as a big creation event. This is equivalent to a diff against the NULL tree. --stdin:: When '--stdin' is specified, the command does not take arguments from the command line. Instead, it reads either one or a pair of separated with a single space from its standard input. + When a single commit is given on one line of such input, it compares the commit with its parents. The following flags further affects its behavior. This does not apply to the case where two separated with a single space are given. -m:: By default, "git-diff-tree --stdin" does not show differences for merge commits. With this flag, it shows differences to that commit from all of its parents. See also '-c'. -s:: By default, "git-diff-tree --stdin" shows differences, either in machine-readable form (without '-p') or in patch form (with '-p'). This output can be suppressed. It is only useful with '-v' flag. -v:: This flag causes "git-diff-tree --stdin" to also show the commit message before the differences. include::pretty-formats.txt[] --no-commit-id:: git-diff-tree outputs a line with the commit ID when applicable. This flag suppressed the commit ID output. -c:: This flag changes the way a merge commit is displayed (which means it is useful only when the command is given one , or '--stdin'). It shows the differences from each of the parents to the merge result simultaneously instead of showing pairwise diff between a parent and the result one at a time (which is what the '-m' option does). Furthermore, it lists only files which were modified from all parents. --cc:: This flag changes the way a merge commit patch is displayed, in a similar way to the '-c' option. It implies the '-c' and '-p' options and further compresses the patch output by omitting hunks that show differences from only one parent, or show the same change from all but one parent for an Octopus merge. When this optimization makes all hunks disappear, the commit itself and the commit log message is not shown, just like in any other "empty diff" case. --always:: Show the commit itself and the commit log message even if the diff itself is empty. Limiting Output --------------- If you're only interested in differences in a subset of files, for example some architecture-specific files, you might do: git-diff-tree -r arch/ia64 include/asm-ia64 and it will only show you what changed in those two directories. Or if you are searching for what changed in just `kernel/sched.c`, just do git-diff-tree -r kernel/sched.c and it will ignore all differences to other files. The pattern is always the prefix, and is matched exactly. There are no wildcards. Even stricter, it has to match a complete path component. I.e. "foo" does not pick up `foobar.h`. "foo" does match `foo/bar.h` so it can be used to name subdirectories. An example of normal usage is: torvalds@ppc970:~/git> git-diff-tree 5319e4...... *100664->100664 blob ac348b.......->a01513....... git-fsck-objects.c which tells you that the last commit changed just one file (it's from this one: ----------------------------------------------------------------------------- commit 3c6f7ca19ad4043e9e72fa94106f352897e651a8 tree 5319e4d609cdd282069cc4dce33c1db559539b03 parent b4e628ea30d5ab3606119d2ea5caeab141d38df7 author Linus Torvalds Sat Apr 9 12:02:30 2005 committer Linus Torvalds Sat Apr 9 12:02:30 2005 Make "git-fsck-objects" print out all the root commits it finds. Once I do the reference tracking, I'll also make it print out all the HEAD commits it finds, which is even more interesting. ----------------------------------------------------------------------------- in case you care). Output format ------------- include::diff-format.txt[] Author ------ Written by Linus Torvalds Documentation -------------- Documentation by David Greaves, Junio C Hamano and the git-list . GIT --- Part of the gitlink:git[7] suite