Documentation / git-branch.txton commit Merge branch 'jc/diff-merge-base-multi' (4cd1b99)
   1git-branch(1)
   2=============
   3
   4NAME
   5----
   6git-branch - List, create, or delete branches
   7
   8SYNOPSIS
   9--------
  10[verse]
  11'git branch' [--color[=<when>] | --no-color] [-r | -a]
  12        [-v [--abbrev=<length> | --no-abbrev]]
  13        [(--merged | --no-merged | --contains) [<commit>]]
  14'git branch' [--set-upstream | --track | --no-track] [-l] [-f] <branchname> [<start-point>]
  15'git branch' (-m | -M) [<oldbranch>] <newbranch>
  16'git branch' (-d | -D) [-r] <branchname>...
  17
  18DESCRIPTION
  19-----------
  20
  21With no arguments, existing branches are listed and the current branch will
  22be highlighted with an asterisk.  Option `-r` causes the remote-tracking
  23branches to be listed, and option `-a` shows both.
  24
  25With `--contains`, shows only the branches that contain the named commit
  26(in other words, the branches whose tip commits are descendants of the
  27named commit).  With `--merged`, only branches merged into the named
  28commit (i.e. the branches whose tip commits are reachable from the named
  29commit) will be listed.  With `--no-merged` only branches not merged into
  30the named commit will be listed.  If the <commit> argument is missing it
  31defaults to 'HEAD' (i.e. the tip of the current branch).
  32
  33The command's second form creates a new branch head named <branchname>
  34which points to the current 'HEAD', or <start-point> if given.
  35
  36Note that this will create the new branch, but it will not switch the
  37working tree to it; use "git checkout <newbranch>" to switch to the
  38new branch.
  39
  40When a local branch is started off a remote branch, git sets up the
  41branch so that 'git pull' will appropriately merge from
  42the remote branch. This behavior may be changed via the global
  43`branch.autosetupmerge` configuration flag. That setting can be
  44overridden by using the `--track` and `--no-track` options.
  45
  46With a '-m' or '-M' option, <oldbranch> will be renamed to <newbranch>.
  47If <oldbranch> had a corresponding reflog, it is renamed to match
  48<newbranch>, and a reflog entry is created to remember the branch
  49renaming. If <newbranch> exists, -M must be used to force the rename
  50to happen.
  51
  52With a `-d` or `-D` option, `<branchname>` will be deleted.  You may
  53specify more than one branch for deletion.  If the branch currently
  54has a reflog then the reflog will also be deleted.
  55
  56Use -r together with -d to delete remote-tracking branches. Note, that it
  57only makes sense to delete remote-tracking branches if they no longer exist
  58in the remote repository or if 'git fetch' was configured not to fetch
  59them again. See also the 'prune' subcommand of linkgit:git-remote[1] for a
  60way to clean up all obsolete remote-tracking branches.
  61
  62
  63OPTIONS
  64-------
  65-d::
  66        Delete a branch. The branch must be fully merged in its
  67        upstream branch, or in `HEAD` if no upstream was set with
  68        `--track` or `--set-upstream`.
  69
  70-D::
  71        Delete a branch irrespective of its merged status.
  72
  73-l::
  74        Create the branch's reflog.  This activates recording of
  75        all changes made to the branch ref, enabling use of date
  76        based sha1 expressions such as "<branchname>@\{yesterday}".
  77        Note that in non-bare repositories, reflogs are usually
  78        enabled by default by the `core.logallrefupdates` config option.
  79
  80-f::
  81--force::
  82        Reset <branchname> to <startpoint> if <branchname> exists
  83        already. Without `-f` 'git branch' refuses to change an existing branch.
  84
  85-m::
  86        Move/rename a branch and the corresponding reflog.
  87
  88-M::
  89        Move/rename a branch even if the new branch name already exists.
  90
  91--color[=<when>]::
  92        Color branches to highlight current, local, and remote branches.
  93        The value must be always (the default), never, or auto.
  94
  95--no-color::
  96        Turn off branch colors, even when the configuration file gives the
  97        default to color output.
  98        Same as `--color=never`.
  99
 100-r::
 101        List or delete (if used with -d) the remote-tracking branches.
 102
 103-a::
 104        List both remote-tracking branches and local branches.
 105
 106-v::
 107--verbose::
 108        Show sha1 and commit subject line for each head, along with
 109        relationship to upstream branch (if any). If given twice, print
 110        the name of the upstream branch, as well.
 111
 112--abbrev=<length>::
 113        Alter the sha1's minimum display length in the output listing.
 114        The default value is 7.
 115
 116--no-abbrev::
 117        Display the full sha1s in the output listing rather than abbreviating them.
 118
 119-t::
 120--track::
 121        When creating a new branch, set up configuration to mark the
 122        start-point branch as "upstream" from the new branch. This
 123        configuration will tell git to show the relationship between the
 124        two branches in `git status` and `git branch -v`. Furthermore,
 125        it directs `git pull` without arguments to pull from the
 126        upstream when the new branch is checked out.
 127+
 128This behavior is the default when the start point is a remote branch.
 129Set the branch.autosetupmerge configuration variable to `false` if you
 130want `git checkout` and `git branch` to always behave as if '--no-track'
 131were given. Set it to `always` if you want this behavior when the
 132start-point is either a local or remote branch.
 133
 134--no-track::
 135        Do not set up "upstream" configuration, even if the
 136        branch.autosetupmerge configuration variable is true.
 137
 138--set-upstream::
 139        If specified branch does not exist yet or if '--force' has been
 140        given, acts exactly like '--track'. Otherwise sets up configuration
 141        like '--track' would when creating the branch, except that where
 142        branch points to is not changed.
 143
 144--contains <commit>::
 145        Only list branches which contain the specified commit.
 146
 147--merged [<commit>]::
 148        Only list branches whose tips are reachable from the
 149        specified commit (HEAD if not specified).
 150
 151--no-merged [<commit>]::
 152        Only list branches whose tips are not reachable from the
 153        specified commit (HEAD if not specified).
 154
 155<branchname>::
 156        The name of the branch to create or delete.
 157        The new branch name must pass all checks defined by
 158        linkgit:git-check-ref-format[1].  Some of these checks
 159        may restrict the characters allowed in a branch name.
 160
 161<start-point>::
 162        The new branch head will point to this commit.  It may be
 163        given as a branch name, a commit-id, or a tag.  If this
 164        option is omitted, the current HEAD will be used instead.
 165
 166<oldbranch>::
 167        The name of an existing branch to rename.
 168
 169<newbranch>::
 170        The new name for an existing branch. The same restrictions as for
 171        <branchname> apply.
 172
 173
 174Examples
 175--------
 176
 177Start development from a known tag::
 178+
 179------------
 180$ git clone git://git.kernel.org/pub/scm/.../linux-2.6 my2.6
 181$ cd my2.6
 182$ git branch my2.6.14 v2.6.14   <1>
 183$ git checkout my2.6.14
 184------------
 185+
 186<1> This step and the next one could be combined into a single step with
 187"checkout -b my2.6.14 v2.6.14".
 188
 189Delete an unneeded branch::
 190+
 191------------
 192$ git clone git://git.kernel.org/.../git.git my.git
 193$ cd my.git
 194$ git branch -d -r origin/todo origin/html origin/man   <1>
 195$ git branch -D test                                    <2>
 196------------
 197+
 198<1> Delete the remote-tracking branches "todo", "html" and "man". The next
 199'fetch' or 'pull' will create them again unless you configure them not to.
 200See linkgit:git-fetch[1].
 201<2> Delete the "test" branch even if the "master" branch (or whichever branch
 202is currently checked out) does not have all commits from the test branch.
 203
 204
 205Notes
 206-----
 207
 208If you are creating a branch that you want to checkout immediately, it is
 209easier to use the git checkout command with its `-b` option to create
 210a branch and check it out with a single command.
 211
 212The options `--contains`, `--merged` and `--no-merged` serve three related
 213but different purposes:
 214
 215- `--contains <commit>` is used to find all branches which will need
 216  special attention if <commit> were to be rebased or amended, since those
 217  branches contain the specified <commit>.
 218
 219- `--merged` is used to find all branches which can be safely deleted,
 220  since those branches are fully contained by HEAD.
 221
 222- `--no-merged` is used to find branches which are candidates for merging
 223  into HEAD, since those branches are not fully contained by HEAD.
 224
 225SEE ALSO
 226--------
 227linkgit:git-check-ref-format[1],
 228linkgit:git-fetch[1],
 229linkgit:git-remote[1],
 230link:user-manual.html#what-is-a-branch[``Understanding history: What is
 231a branch?''] in the Git User's Manual.
 232
 233Author
 234------
 235Written by Linus Torvalds <torvalds@osdl.org> and Junio C Hamano <gitster@pobox.com>
 236
 237Documentation
 238--------------
 239Documentation by Junio C Hamano and the git-list <git@vger.kernel.org>.
 240
 241GIT
 242---
 243Part of the linkgit:git[1] suite