6 git-worktree - Manage multiple worktrees
12 'git worktree prune' [-n] [-v] [--expire <expire>]
17 Manage multiple worktrees attached to the same repository. These are
18 created by the command `git checkout --to`.
20 A git repository can support multiple working trees, allowing you to check
21 out more than one branch at a time. With `git checkout --to` a new working
22 tree is associated with the repository. This new working tree is called a
23 "linked working tree" as opposed to the "main working tree" prepared by "git
24 init" or "git clone". A repository has one main working tree (if it's not a
25 bare repository) and zero or more linked working trees.
27 Each linked working tree has a private sub-directory in the repository's
28 $GIT_DIR/worktrees directory. The private sub-directory's name is usually
29 the base name of the linked working tree's path, possibly appended with a
30 number to make it unique. For example, when `$GIT_DIR=/path/main/.git` the
31 command `git checkout --to /path/other/test-next next` creates the linked
32 working tree in `/path/other/test-next` and also creates a
33 `$GIT_DIR/worktrees/test-next` directory (or `$GIT_DIR/worktrees/test-next1`
34 if `test-next` is already taken).
36 Within a linked working tree, $GIT_DIR is set to point to this private
37 directory (e.g. `/path/main/.git/worktrees/test-next` in the example) and
38 $GIT_COMMON_DIR is set to point back to the main working tree's $GIT_DIR
39 (e.g. `/path/main/.git`). These settings are made in a `.git` file located at
40 the top directory of the linked working tree.
42 Path resolution via `git rev-parse --git-path` uses either
43 $GIT_DIR or $GIT_COMMON_DIR depending on the path. For example, in the
44 linked working tree `git rev-parse --git-path HEAD` returns
45 `/path/main/.git/worktrees/test-next/HEAD` (not
46 `/path/other/test-next/.git/HEAD` or `/path/main/.git/HEAD`) while `git
47 rev-parse --git-path refs/heads/master` uses
48 $GIT_COMMON_DIR and returns `/path/main/.git/refs/heads/master`,
49 since refs are shared across all working trees.
51 See linkgit:gitrepository-layout[5] for more information. The rule of
52 thumb is do not make any assumption about whether a path belongs to
53 $GIT_DIR or $GIT_COMMON_DIR when you need to directly access something
54 inside $GIT_DIR. Use `git rev-parse --git-path` to get the final path.
56 When you are done with a linked working tree you can simply delete it.
57 The working tree's entry in the repository's $GIT_DIR/worktrees
58 directory will eventually be removed automatically (see
59 `gc.pruneworktreesexpire` in linkgit::git-config[1]), or you can run
60 `git worktree prune` in the main or any linked working tree to
61 clean up any stale entries in $GIT_DIR/worktrees.
63 If you move a linked working directory to another file system, or
64 within a file system that does not support hard links, you need to run
65 at least one git command inside the linked working directory
66 (e.g. `git status`) in order to update its entry in $GIT_DIR/worktrees
67 so that it does not get automatically removed.
69 To prevent a $GIT_DIR/worktrees entry from from being pruned (which
70 can be useful in some situations, such as when the
71 entry's working tree is stored on a portable device), add a file named
72 'locked' to the entry's directory. The file contains the reason in
73 plain text. For example, if a linked working tree's `.git` file points
74 to `/path/main/.git/worktrees/test-next` then a file named
75 `/path/main/.git/worktrees/test-next/locked` will prevent the
76 `test-next` entry from being pruned. See
77 linkgit:gitrepository-layout[5] for details.
83 Prune working tree information in $GIT_DIR/worktrees.
90 With `prune`, do not remove anything; just report what it would
95 With `prune`, report all removals.
98 With `prune`, only expire unused worktrees older than <time>.
102 Multiple checkout support for submodules is incomplete. It is NOT
103 recommended to make multiple checkouts of a superproject.
105 git-worktree could provide more automation for tasks currently
106 performed manually or via other commands, such as:
108 - `add` to create a new linked worktree
109 - `remove` to remove a linked worktree and its administrative files (and
110 warn if the worktree is dirty)
111 - `mv` to move or rename a worktree and update its administrative files
112 - `list` to list linked worktrees
113 - `lock` to prevent automatic pruning of administrative files (for instance,
114 for a worktree on a portable device)
119 linkgit:git-checkout[1]
123 Part of the linkgit:git[1] suite