Add ANSI control code emulation for the Windows console

[thirdparty/git.git] / Documentation / git-submodule.txt

git-submodule(1)
================

NAME
----
git-submodule - Initialize, update or inspect submodules


SYNOPSIS
--------
[verse]
'git submodule' [--quiet] add [-b branch] [--] <repository> <path>
'git submodule' [--quiet] status [--cached] [--] [<path>...]
'git submodule' [--quiet] init [--] [<path>...]
'git submodule' [--quiet] update [--init] [--] [<path>...]
'git submodule' [--quiet] summary [--summary-limit <n>] [commit] [--] [<path>...]


DESCRIPTION
-----------
Submodules are a special kind of tree entries which refer to a particular tree
state in another repository.  The tree entry describes
the existence of a submodule with the given name and the exact revision that
should be used, while an entry in `.gitmodules` file gives the location of
the repository.

When checked out, submodules will maintain their own independent repositories
within their directories; the only link between the submodule and the "parent
project" is the tree entry within the parent project mentioned above.

This command will manage the tree entries and contents of the gitmodules file
for you, as well as inspecting the status of your submodules and updating them.
When adding a new submodule to the tree, the 'add' subcommand is to be used.
However, when pulling a tree containing submodules, these will not be checked
out by default; the 'init' and 'update' subcommands will maintain submodules
checked out and at appropriate revision in your working tree. You can inspect
the current status of your submodules using the 'submodule' subcommand and get
an overview of changes 'update' would perform using the 'summary' subcommand.


COMMANDS
--------
add::
	Add the given repository as a submodule at the given path
	to the changeset to be committed next to the current
	project: the current project is termed termed the "superproject".
+
This requires two arguments: <repository> and <path>.
+
<repository> is the URL of the new submodule's origin repository.
This may be either an absolute URL, or (if it begins with ./
or ../), the location relative to the superproject's origin
repository.
+
<path> is the relative location for the cloned submodule to
exist in the superproject. If <path> does not exist, then the
submodule is created by cloning from the named URL. If <path> does
exist and is already a valid git repository, then this is added
to the changeset without cloning. This second form is provided
to ease creating a new submodule from scratch, and presumes
the user will later push the submodule to the given URL.
+
In either case, the given URL is recorded into .gitmodules for
use by subsequent users cloning the superproject. If the URL is
given relative to the superproject's repository, the presumption
is the superproject and submodule repositories will be kept
together in the same relative location, and only the
superproject's URL need be provided: git-submodule will correctly
locate the submodule using the relative URL in .gitmodules.

status::
	Show the status of the submodules. This will print the SHA-1 of the
	currently checked out commit for each submodule, along with the
	submodule path and the output of 'git-describe' for the
	SHA-1. Each SHA-1 will be prefixed with `-` if the submodule is not
	initialized and `+` if the currently checked out submodule commit
	does not match the SHA-1 found in the index of the containing
	repository. This command is the default command for 'git-submodule'.

init::
	Initialize the submodules, i.e. register in .git/config each submodule
	name and url found in .gitmodules. The key used in .git/config is
	`submodule.$name.url`. This command does not alter existing information
	in .git/config.

update::
	Update the registered submodules, i.e. clone missing submodules and
	checkout the commit specified in the index of the containing repository.
	This will make the submodules HEAD be detached.
+
If the submodule is not yet initialized, and you just want to use the
setting as stored in .gitmodules, you can automatically initialize the
submodule with the --init option.

summary::
	Show commit summary between the given commit (defaults to HEAD) and
	working tree/index. For a submodule in question, a series of commits
	in the submodule between the given super project commit and the
	index or working tree (switched by --cached) are shown.

OPTIONS
-------
-q::
--quiet::
	Only print error messages.

-b::
--branch::
	Branch of repository to add as submodule.

--cached::
	This option is only valid for status and summary commands.  These
	commands typically use the commit found in the submodule HEAD, but
	with this option, the commit stored in the index is used instead.

-n::
--summary-limit::
	This option is only valid for the summary command.
	Limit the summary size (number of commits shown in total).
	Giving 0 will disable the summary; a negative number means unlimited
	(the default). This limit only applies to modified submodules. The
	size is always limited to 1 for added/deleted/typechanged submodules.

<path>::
	Path to submodule(s). When specified this will restrict the command
	to only operate on the submodules found at the specified paths.
	(This argument is required with add).

FILES
-----
When initializing submodules, a .gitmodules file in the top-level directory
of the containing repository is used to find the url of each submodule.
This file should be formatted in the same way as `$GIT_DIR/config`. The key
to each submodule url is "submodule.$name.url".  See linkgit:gitmodules[5]
for details.


AUTHOR
------
Written by Lars Hjemli <hjemli@gmail.com>

GIT
---
Part of the linkgit:git[1] suite