Documentation/git.txt - git - Git at Google


            
            git(7)

            
            ======

            
            v0.99.5, Aug 2005


            NAME

            
            ----

            
            git - the stupid content tracker


            SYNOPSIS

            
            --------

            
            'git-<command>' <args>


            DESCRIPTION

            
            -----------


            This is reference information for the core git commands.


            Before reading this cover to cover, you may want to take a look

            
            at the link:tutorial.html[tutorial] document.


            The <<Discussion>> section below contains much useful definition and

            
            clarification info - read that first.  And of the commands, I suggest

            
            reading link:git-update-cache.html[git-update-cache] and

            
            link:git-read-tree.html[git-read-tree] first - I wish I had!


            If you are migrating from CVS, link:cvs-migration.html[cvs migration]

            
            document may be helpful after you finish the tutorial.


            After you get the general feel from the tutorial and this

            
            overview page, you may want to take a look at the

            
            link:howto-index.html[howto] documents.


            David Greaves <david@dgreaves.com>

            
            08/05/05


            Updated by Junio C Hamano <junkio@cox.net> on 2005-05-05 to

            
            reflect recent changes.


            Commands Overview

            
            -----------------

            
            The git commands can helpfully be split into those that manipulate

            
            the repository, the cache and the working fileset, those that

            
            interrogate and compare them, and those that moves objects and

            
            references between repositories.


            In addition, git itself comes with a spartan set of porcelain

            
            commands.  They are usable but are not meant to compete with real

            
            Porcelains.


            There are also some ancillary programs that can be viewed as useful

            
            aids for using the core commands but which are unlikely to be used by

            
            SCMs layered over git.


            Manipulation commands

            
            ~~~~~~~~~~~~~~~~~~~~~

            
            link:git-apply.html[git-apply]::

            
            	Reads a "diff -up1" or git generated patch file and

            
            	applies it to the working tree.


            link:git-checkout-cache.html[git-checkout-cache]::

            
            	Copy files from the cache to the working directory


            link:git-commit-tree.html[git-commit-tree]::

            
            	Creates a new commit object


            link:git-hash-object.html[git-hash-object]::

            
            	Computes the object ID from a file.


            link:git-init-db.html[git-init-db]::

            
            	Creates an empty git object database


            link:git-merge-cache.html[git-merge-cache]::

            
            	Runs a merge for files needing merging


            link:git-mktag.html[git-mktag]::

            
            	Creates a tag object


            link:git-pack-objects.html[git-pack-objects]::

            
            	Creates a packed archive of objects.


            link:git-prune-packed.html[git-prune-packed]::

            
            	Remove extra objects that are already in pack files.


            link:git-read-tree.html[git-read-tree]::

            
            	Reads tree information into the directory cache


            link:git-unpack-objects.html[git-unpack-objects]::

            
            	Unpacks objects out of a packed archive.


            link:git-update-cache.html[git-update-cache]::

            
            	Modifies the index or directory cache


            link:git-write-tree.html[git-write-tree]::

            
            	Creates a tree from the current cache


            Interrogation commands

            
            ~~~~~~~~~~~~~~~~~~~~~~


            link:git-cat-file.html[git-cat-file]::

            
            	Provide content or type information for repository objects


            link:git-diff-cache.html[git-diff-cache]::

            
            	Compares content and mode of blobs between the cache and repository


            link:git-diff-files.html[git-diff-files]::

            
            	Compares files in the working tree and the cache


            link:git-diff-stages.html[git-diff-stages]::

            
            	Compares two "merge stages" in the index file.


            link:git-diff-tree.html[git-diff-tree]::

            
            	Compares the content and mode of blobs found via two tree objects


            link:git-export.html[git-export]::

            
            	Exports each commit and a diff against each of its parents


            link:git-fsck-cache.html[git-fsck-cache]::

            
            	Verifies the connectivity and validity of the objects in the database


            link:git-ls-files.html[git-ls-files]::

            
            	Information about files in the cache/working directory


            link:git-ls-tree.html[git-ls-tree]::

            
            	Displays a tree object in human readable form


            link:git-merge-base.html[git-merge-base]::

            
            	Finds as good a common ancestor as possible for a merge


            link:git-rev-list.html[git-rev-list]::

            
            	Lists commit objects in reverse chronological order


            link:git-rev-tree.html[git-rev-tree]::

            
            	Provides the revision tree for one or more commits


            link:git-show-index.html[git-show-index]::

            
            	Displays contents of a pack idx file.


            link:git-tar-tree.html[git-tar-tree]::

            
            	Creates a tar archive of the files in the named tree


            link:git-unpack-file.html[git-unpack-file]::

            
            	Creates a temporary file with a blob's contents


            link:git-var.html[git-var]::

            
            	Displays a git logical variable


            link:git-verify-pack.html[git-verify-pack]::

            
            	Validates packed GIT archive files


            The interrogate commands may create files - and you can force them to

            
            touch the working file set - but in general they don't


            Synching repositories

            
            ~~~~~~~~~~~~~~~~~~~~~


            link:git-clone-pack.html[git-clone-pack]::

            
            	Clones a repository into the current repository (engine

            
            	for ssh and local transport)


            link:git-fetch-pack.html[git-fetch-pack]::

            
            	Updates from a remote repository.


            link:git-http-pull.html[git-http-pull]::

            
            	Downloads a remote GIT repository via HTTP


            link:git-local-pull.html[git-local-pull]::

            
            	Duplicates another GIT repository on a local system


            link:git-peek-remote.html[git-peek-remote]::

            
            	Lists references on a remote repository using upload-pack protocol.


            link:git-receive-pack.html[git-receive-pack]::

            
            	Invoked by 'git-send-pack' to receive what is pushed to it.


            link:git-send-pack.html[git-send-pack]::

            
            	Pushes to a remote repository, intelligently.


            link:git-ssh-pull.html[git-ssh-pull]::

            
            	Pulls from a remote repository over ssh connection


            link:git-ssh-push.html[git-ssh-push]::

            
            	Helper "server-side" program used by git-ssh-pull


            link:git-update-server-info.html[git-update-server-info]::

            
            	Updates auxiliary information on a dumb server to help

            
            	clients discover references and packs on it.


            link:git-upload-pack.html[git-upload-pack]::

            
            	Invoked by 'git-clone-pack' and 'git-fetch-pack' to push

            
            	what are asked for.


            Porcelain-ish Commands

            
            ----------------------


            link:git-add-script.html[git-add-script]::

            
            	Add paths to the index file.


            link:git-applymbox.html[git-applymbox]::

            
            	Apply patches from a mailbox.


            link:git-bisect-script.html[git-bisect-script]::

            
            	Find the change that introduced a bug.


            link:git-branch-script.html[git-branch-script]::

            
            	Create and Show branches.


            link:git-cherry-pick-script.html[git-cherry-pick-script]::

            
            	Cherry-pick the effect of an existing commit.


            link:git-clone-script.html[git-clone-script]::

            
            	Clones a repository into a new directory.


            link:git-commit-script.html[git-commit-script]::

            
            	Record changes to the repository.


            link:git-fetch-script.html[git-fetch-script]::

            
            	Download from a remote repository via various protocols.


            link:git-log-script.html[git-log-script]::

            
            	Shows commit logs.


            link:git-ls-remote-script.html[git-ls-remote-script]::

            
            	Shows references in a remote or local repository.


            link:git-octopus-script.html[git-octopus-script]::

            
            	Merge more than two commits.


            link:git-pull-script.html[git-pull-script]::

            
            	Fetch from and merge with a remote repository.


            link:git-push-script.html[git-push-script]::

            
            	Update remote refs along with associated objects.


            link:git-rebase-script.html[git-rebase-script]::

            
            	Rebase local commits to new upstream head.


            link:git-rename-script.html[git-rename]::

            
            	Rename files and directories.


            link:git-repack-script.html[git-repack-script]::

            
            	Pack unpacked objects in a repository.


            link:git-resolve-script.html[git-resolve-script]::

            
            	Merge two commits.


            link:git-revert-script.html[git-revert-script]::

            
            	Revert an existing commit.


            link:git-shortlog.html[git-shortlog]::

            
            	Summarizes 'git log' output.


            link:git-show-branch.html[git-show-branch]::

            
            	Show branches and their commits.


            link:git-status-script.html[git-status-script]::

            
            	Shows the working tree status.


            link:git-verify-tag-script.html[git-verify-tag-script]::

            
            	Check the GPG signature of tag.


            link:git-whatchanged.html[git-whatchanged]::

            
            	Shows commit logs and differences they introduce.


            Ancillary Commands

            
            ------------------

            
            Manipulators:


            link:git-applypatch.html[git-applypatch]::

            
            	Apply one patch extracted from an e-mail.


            link:git-convert-cache.html[git-convert-cache]::

            
            	Converts old-style GIT repository


            link:git-cvsimport-script.html[git-cvsimport-script]::

            
            	Salvage your data out of another SCM people love to hate.


            link:git-merge-one-file-script.html[git-merge-one-file-script]::

            
            	The standard helper program to use with "git-merge-cache"


            link:git-prune-script.html[git-prune-script]::

            
            	Prunes all unreachable objects from the object database


            link:git-relink-script.html[git-relink-script]::

            
            	Hardlink common objects in local repositories.


            link:git-sh-setup-script.html[git-sh-setup-script]::

            
            	Common git shell script setup code.


            link:git-tag-script.html[git-tag-script]::

            
            	An example script to create a tag object signed with GPG


            Interrogators:


            link:git-cherry.html[git-cherry]::

            
            	Find commits not merged upstream.


            link:git-count-objects-script.html[git-count-objects-script]::

            
            	Count unpacked number of objects and their disk consumption.


            link:git-diff-helper.html[git-diff-helper]::

            
            	Generates patch format output for git-diff-*


            link:git-mailinfo.html[git-mailinfo]::

            
            	Extracts patch from a single e-mail message.


            link:git-mailsplit.html[git-mailsplit]::

            
            	git-mailsplit.


            link:git-patch-id.html[git-patch-id]::

            
            	Compute unique ID for a patch.


            link:git-send-email-script.html[git-send-email]::

            
            	Send patch e-mails out of "format-patch --mbox" output.


            Commands not yet documented

            
            ---------------------------


            link:git-build-rev-cache.html[git-build-rev-cache]::

            
            	git-build-rev-cache.


            link:git-checkout-script.html[git-checkout-script]::

            
            	git-checkout-script.


            link:git-clone-dumb-http.html[git-clone-dumb-http]::

            
            	git-clone-dumb-http.


            link:git-daemon.html[git-daemon]::

            
            	git-daemon.


            link:git-diff-script.html[git-diff-script]::

            
            	git-diff-script.


            link:git-format-patch-script.html[git-format-patch-script]::

            
            	git-format-patch-script.


            link:git-get-tar-commit-id.html[git-get-tar-commit-id]::

            
            	git-get-tar-commit-id.


            link:git-request-pull-script.html[git-request-pull-script]::

            
            	git-request-pull-script.


            link:git-reset-script.html[git-reset-script]::

            
            	git-reset-script.


            link:git-rev-parse.html[git-rev-parse]::

            
            	git-rev-parse.


            link:git-show-rev-cache.html[git-show-rev-cache]::

            
            	git-show-rev-cache.


            link:git-stripspace.html[git-stripspace]::

            
            	git-stripspace.


            link:gitk.html[gitk]::

            
            	gitk.


            Identifier Terminology

            
            ----------------------

            
            <object>::

            
            	Indicates the sha1 identifier for any type of object


            <blob>::

            
            	Indicates a blob object sha1 identifier


            <tree>::

            
            	Indicates a tree object sha1 identifier


            <commit>::

            
            	Indicates a commit object sha1 identifier


            <tree-ish>::

            
            	Indicates a tree, commit or tag object sha1 identifier.  A

            
            	command that takes a <tree-ish> argument ultimately wants to

            
            	operate on a <tree> object but automatically dereferences

            
            	<commit> and <tag> objects that point at a <tree>.


            <type>::

            
            	Indicates that an object type is required.

            
            	Currently one of: blob/tree/commit/tag


            <file>::

            
            	Indicates a filename - always relative to the root of

            
            	the tree structure GIT_INDEX_FILE describes.


            Symbolic Identifiers

            
            --------------------

            
            Any git command accepting any <object> can also use the following

            
            symbolic notation:


            HEAD::

            
            	indicates the head of the repository (ie the contents of

            
            	`$GIT_DIR/HEAD`)

            
            <tag>::

            
            	a valid tag 'name'+

            
            	(ie the contents of `$GIT_DIR/refs/tags/<tag>`)

            
            <head>::

            
            	a valid head 'name'+

            
            	(ie the contents of `$GIT_DIR/refs/heads/<head>`)

            
            <snap>::

            
            	a valid snapshot 'name'+

            
            	(ie the contents of `$GIT_DIR/refs/snap/<snap>`)


            File/Directory Structure

            
            ------------------------


            Please see link:repository-layout.html[repository layout] document.


            Higher level SCMs may provide and manage additional information in the

            
            GIT_DIR.


            Terminology

            
            -----------

            
            Please see link:glossary.html[glossary] document.


            Environment Variables

            
            ---------------------

            
            Various git commands use the following environment variables:


            The git Repository

            
            ~~~~~~~~~~~~~~~~~~

            
            These environment variables apply to 'all' core git commands. Nb: it

            
            is worth noting that they may be used/overridden by SCMS sitting above

            
            git so take care if using Cogito etc


            'GIT_INDEX_FILE'::

            
            	This environment allows the specification of an alternate

            
            	cache/index file. If not specified, the default of

            
            	`$GIT_DIR/index` is used.


            'GIT_OBJECT_DIRECTORY'::

            
            	If the object storage directory is specified via this

            
            	environment variable then the sha1 directories are created

            
            	underneath - otherwise the default `$GIT_DIR/objects`

            
            	directory is used.


            'GIT_ALTERNATE_OBJECT_DIRECTORIES'::

            
            	Due to the immutable nature of git objects, old objects can be

            
            	archived into shared, read-only directories. This variable

            
            	specifies a ":" separated list of git object directories which

            
            	can be used to search for git objects. New objects will not be

            
            	written to these directories.


            'GIT_DIR'::

            
            	If the 'GIT_DIR' environment variable is set then it specifies

            
            	a path to use instead of `./.git` for the base of the

            
            	repository.


            git Commits

            
            ~~~~~~~~~~~

            
            'GIT_AUTHOR_NAME'::

            
            'GIT_AUTHOR_EMAIL'::

            
            'GIT_AUTHOR_DATE'::

            
            'GIT_COMMITTER_NAME'::

            
            'GIT_COMMITTER_EMAIL'::

            
            	see link:git-commit-tree.html[git-commit-tree]


            git Diffs

            
            ~~~~~~~~~

            
            'GIT_DIFF_OPTS'::

            
            'GIT_EXTERNAL_DIFF'::

            
            	see the "generating patches" section in :

            
            	link:git-diff-cache.html[git-diff-cache];

            
            	link:git-diff-files.html[git-diff-files];

            
            	link:git-diff-tree.html[git-diff-tree]


            Discussion[[Discussion]]

            
            ------------------------

            
            include::../README[]


            Author

            
            ------

            
            Written by Linus Torvalds <torvalds@osdl.org> and the git-list <git@vger.kernel.org>.


            Documentation

            
            --------------

            
            Documentation by David Greaves, Junio C Hamano and the git-list <git@vger.kernel.org>.


            GIT

            
            ---

            
            Part of the link:git.html[git] suite
	git(7)
	======
	v0.99.5, Aug 2005

	NAME
	----
	git - the stupid content tracker


	SYNOPSIS
	--------
	'git-<command>' <args>

	DESCRIPTION
	-----------

	This is reference information for the core git commands.

	Before reading this cover to cover, you may want to take a look
	at the link:tutorial.html[tutorial] document.

	The <<Discussion>> section below contains much useful definition and
	clarification info - read that first. And of the commands, I suggest
	reading link:git-update-cache.html[git-update-cache] and
	link:git-read-tree.html[git-read-tree] first - I wish I had!

	If you are migrating from CVS, link:cvs-migration.html[cvs migration]
	document may be helpful after you finish the tutorial.

	After you get the general feel from the tutorial and this
	overview page, you may want to take a look at the
	link:howto-index.html[howto] documents.


	David Greaves <david@dgreaves.com>
	08/05/05

	Updated by Junio C Hamano <junkio@cox.net> on 2005-05-05 to
	reflect recent changes.

	Commands Overview
	-----------------
	The git commands can helpfully be split into those that manipulate
	the repository, the cache and the working fileset, those that
	interrogate and compare them, and those that moves objects and
	references between repositories.

	In addition, git itself comes with a spartan set of porcelain
	commands. They are usable but are not meant to compete with real
	Porcelains.

	There are also some ancillary programs that can be viewed as useful
	aids for using the core commands but which are unlikely to be used by
	SCMs layered over git.

	Manipulation commands
	~~~~~~~~~~~~~~~~~~~~~
	link:git-apply.html[git-apply]::
	Reads a "diff -up1" or git generated patch file and
	applies it to the working tree.

	link:git-checkout-cache.html[git-checkout-cache]::
	Copy files from the cache to the working directory

	link:git-commit-tree.html[git-commit-tree]::
	Creates a new commit object

	link:git-hash-object.html[git-hash-object]::
	Computes the object ID from a file.

	link:git-init-db.html[git-init-db]::
	Creates an empty git object database

	link:git-merge-cache.html[git-merge-cache]::
	Runs a merge for files needing merging

	link:git-mktag.html[git-mktag]::
	Creates a tag object

	link:git-pack-objects.html[git-pack-objects]::
	Creates a packed archive of objects.

	link:git-prune-packed.html[git-prune-packed]::
	Remove extra objects that are already in pack files.

	link:git-read-tree.html[git-read-tree]::
	Reads tree information into the directory cache

	link:git-unpack-objects.html[git-unpack-objects]::
	Unpacks objects out of a packed archive.

	link:git-update-cache.html[git-update-cache]::
	Modifies the index or directory cache

	link:git-write-tree.html[git-write-tree]::
	Creates a tree from the current cache


	Interrogation commands
	~~~~~~~~~~~~~~~~~~~~~~

	link:git-cat-file.html[git-cat-file]::
	Provide content or type information for repository objects

	link:git-diff-cache.html[git-diff-cache]::
	Compares content and mode of blobs between the cache and repository

	link:git-diff-files.html[git-diff-files]::
	Compares files in the working tree and the cache

	link:git-diff-stages.html[git-diff-stages]::
	Compares two "merge stages" in the index file.

	link:git-diff-tree.html[git-diff-tree]::
	Compares the content and mode of blobs found via two tree objects

	link:git-export.html[git-export]::
	Exports each commit and a diff against each of its parents

	link:git-fsck-cache.html[git-fsck-cache]::
	Verifies the connectivity and validity of the objects in the database

	link:git-ls-files.html[git-ls-files]::
	Information about files in the cache/working directory

	link:git-ls-tree.html[git-ls-tree]::
	Displays a tree object in human readable form

	link:git-merge-base.html[git-merge-base]::
	Finds as good a common ancestor as possible for a merge

	link:git-rev-list.html[git-rev-list]::
	Lists commit objects in reverse chronological order

	link:git-rev-tree.html[git-rev-tree]::
	Provides the revision tree for one or more commits

	link:git-show-index.html[git-show-index]::
	Displays contents of a pack idx file.

	link:git-tar-tree.html[git-tar-tree]::
	Creates a tar archive of the files in the named tree

	link:git-unpack-file.html[git-unpack-file]::
	Creates a temporary file with a blob's contents

	link:git-var.html[git-var]::
	Displays a git logical variable

	link:git-verify-pack.html[git-verify-pack]::
	Validates packed GIT archive files

	The interrogate commands may create files - and you can force them to
	touch the working file set - but in general they don't


	Synching repositories
	~~~~~~~~~~~~~~~~~~~~~

	link:git-clone-pack.html[git-clone-pack]::
	Clones a repository into the current repository (engine
	for ssh and local transport)

	link:git-fetch-pack.html[git-fetch-pack]::
	Updates from a remote repository.

	link:git-http-pull.html[git-http-pull]::
	Downloads a remote GIT repository via HTTP

	link:git-local-pull.html[git-local-pull]::
	Duplicates another GIT repository on a local system

	link:git-peek-remote.html[git-peek-remote]::
	Lists references on a remote repository using upload-pack protocol.

	link:git-receive-pack.html[git-receive-pack]::
	Invoked by 'git-send-pack' to receive what is pushed to it.

	link:git-send-pack.html[git-send-pack]::
	Pushes to a remote repository, intelligently.

	link:git-ssh-pull.html[git-ssh-pull]::
	Pulls from a remote repository over ssh connection

	link:git-ssh-push.html[git-ssh-push]::
	Helper "server-side" program used by git-ssh-pull

	link:git-update-server-info.html[git-update-server-info]::
	Updates auxiliary information on a dumb server to help
	clients discover references and packs on it.

	link:git-upload-pack.html[git-upload-pack]::
	Invoked by 'git-clone-pack' and 'git-fetch-pack' to push
	what are asked for.


	Porcelain-ish Commands
	----------------------

	link:git-add-script.html[git-add-script]::
	Add paths to the index file.

	link:git-applymbox.html[git-applymbox]::
	Apply patches from a mailbox.

	link:git-bisect-script.html[git-bisect-script]::
	Find the change that introduced a bug.

	link:git-branch-script.html[git-branch-script]::
	Create and Show branches.

	link:git-cherry-pick-script.html[git-cherry-pick-script]::
	Cherry-pick the effect of an existing commit.

	link:git-clone-script.html[git-clone-script]::
	Clones a repository into a new directory.

	link:git-commit-script.html[git-commit-script]::
	Record changes to the repository.

	link:git-fetch-script.html[git-fetch-script]::
	Download from a remote repository via various protocols.

	link:git-log-script.html[git-log-script]::
	Shows commit logs.

	link:git-ls-remote-script.html[git-ls-remote-script]::
	Shows references in a remote or local repository.

	link:git-octopus-script.html[git-octopus-script]::
	Merge more than two commits.

	link:git-pull-script.html[git-pull-script]::
	Fetch from and merge with a remote repository.

	link:git-push-script.html[git-push-script]::
	Update remote refs along with associated objects.

	link:git-rebase-script.html[git-rebase-script]::
	Rebase local commits to new upstream head.

	link:git-rename-script.html[git-rename]::
	Rename files and directories.

	link:git-repack-script.html[git-repack-script]::
	Pack unpacked objects in a repository.

	link:git-resolve-script.html[git-resolve-script]::
	Merge two commits.

	link:git-revert-script.html[git-revert-script]::
	Revert an existing commit.

	link:git-shortlog.html[git-shortlog]::
	Summarizes 'git log' output.

	link:git-show-branch.html[git-show-branch]::
	Show branches and their commits.

	link:git-status-script.html[git-status-script]::
	Shows the working tree status.

	link:git-verify-tag-script.html[git-verify-tag-script]::
	Check the GPG signature of tag.

	link:git-whatchanged.html[git-whatchanged]::
	Shows commit logs and differences they introduce.


	Ancillary Commands
	------------------
	Manipulators:

	link:git-applypatch.html[git-applypatch]::
	Apply one patch extracted from an e-mail.

	link:git-convert-cache.html[git-convert-cache]::
	Converts old-style GIT repository

	link:git-cvsimport-script.html[git-cvsimport-script]::
	Salvage your data out of another SCM people love to hate.

	link:git-merge-one-file-script.html[git-merge-one-file-script]::
	The standard helper program to use with "git-merge-cache"

	link:git-prune-script.html[git-prune-script]::
	Prunes all unreachable objects from the object database

	link:git-relink-script.html[git-relink-script]::
	Hardlink common objects in local repositories.

	link:git-sh-setup-script.html[git-sh-setup-script]::
	Common git shell script setup code.

	link:git-tag-script.html[git-tag-script]::
	An example script to create a tag object signed with GPG


	Interrogators:

	link:git-cherry.html[git-cherry]::
	Find commits not merged upstream.

	link:git-count-objects-script.html[git-count-objects-script]::
	Count unpacked number of objects and their disk consumption.

	link:git-diff-helper.html[git-diff-helper]::
	Generates patch format output for git-diff-*

	link:git-mailinfo.html[git-mailinfo]::
	Extracts patch from a single e-mail message.

	link:git-mailsplit.html[git-mailsplit]::
	git-mailsplit.

	link:git-patch-id.html[git-patch-id]::
	Compute unique ID for a patch.

	link:git-send-email-script.html[git-send-email]::
	Send patch e-mails out of "format-patch --mbox" output.


	Commands not yet documented
	---------------------------

	link:git-build-rev-cache.html[git-build-rev-cache]::
	git-build-rev-cache.

	link:git-checkout-script.html[git-checkout-script]::
	git-checkout-script.

	link:git-clone-dumb-http.html[git-clone-dumb-http]::
	git-clone-dumb-http.

	link:git-daemon.html[git-daemon]::
	git-daemon.

	link:git-diff-script.html[git-diff-script]::
	git-diff-script.

	link:git-format-patch-script.html[git-format-patch-script]::
	git-format-patch-script.

	link:git-get-tar-commit-id.html[git-get-tar-commit-id]::
	git-get-tar-commit-id.

	link:git-request-pull-script.html[git-request-pull-script]::
	git-request-pull-script.

	link:git-reset-script.html[git-reset-script]::
	git-reset-script.

	link:git-rev-parse.html[git-rev-parse]::
	git-rev-parse.

	link:git-show-rev-cache.html[git-show-rev-cache]::
	git-show-rev-cache.

	link:git-stripspace.html[git-stripspace]::
	git-stripspace.

	link:gitk.html[gitk]::
	gitk.


	Identifier Terminology
	----------------------
	<object>::
	Indicates the sha1 identifier for any type of object

	<blob>::
	Indicates a blob object sha1 identifier

	<tree>::
	Indicates a tree object sha1 identifier

	<commit>::
	Indicates a commit object sha1 identifier

	<tree-ish>::
	Indicates a tree, commit or tag object sha1 identifier. A
	command that takes a <tree-ish> argument ultimately wants to
	operate on a <tree> object but automatically dereferences
	<commit> and <tag> objects that point at a <tree>.

	<type>::
	Indicates that an object type is required.
	Currently one of: blob/tree/commit/tag

	<file>::
	Indicates a filename - always relative to the root of
	the tree structure GIT_INDEX_FILE describes.

	Symbolic Identifiers
	--------------------
	Any git command accepting any <object> can also use the following
	symbolic notation:

	HEAD::
	indicates the head of the repository (ie the contents of
	`$GIT_DIR/HEAD`)
	<tag>::
	a valid tag 'name'+
	(ie the contents of `$GIT_DIR/refs/tags/<tag>`)
	<head>::
	a valid head 'name'+
	(ie the contents of `$GIT_DIR/refs/heads/<head>`)
	<snap>::
	a valid snapshot 'name'+
	(ie the contents of `$GIT_DIR/refs/snap/<snap>`)


	File/Directory Structure
	------------------------

	Please see link:repository-layout.html[repository layout] document.

	Higher level SCMs may provide and manage additional information in the
	GIT_DIR.


	Terminology
	-----------
	Please see link:glossary.html[glossary] document.


	Environment Variables
	---------------------
	Various git commands use the following environment variables:

	The git Repository
	~~~~~~~~~~~~~~~~~~
	These environment variables apply to 'all' core git commands. Nb: it
	is worth noting that they may be used/overridden by SCMS sitting above
	git so take care if using Cogito etc

	'GIT_INDEX_FILE'::
	This environment allows the specification of an alternate
	cache/index file. If not specified, the default of
	`$GIT_DIR/index` is used.

	'GIT_OBJECT_DIRECTORY'::
	If the object storage directory is specified via this
	environment variable then the sha1 directories are created
	underneath - otherwise the default `$GIT_DIR/objects`
	directory is used.

	'GIT_ALTERNATE_OBJECT_DIRECTORIES'::
	Due to the immutable nature of git objects, old objects can be
	archived into shared, read-only directories. This variable
	specifies a ":" separated list of git object directories which
	can be used to search for git objects. New objects will not be
	written to these directories.

	'GIT_DIR'::
	If the 'GIT_DIR' environment variable is set then it specifies
	a path to use instead of `./.git` for the base of the
	repository.

	git Commits
	~~~~~~~~~~~
	'GIT_AUTHOR_NAME'::
	'GIT_AUTHOR_EMAIL'::
	'GIT_AUTHOR_DATE'::
	'GIT_COMMITTER_NAME'::
	'GIT_COMMITTER_EMAIL'::
	see link:git-commit-tree.html[git-commit-tree]

	git Diffs
	~~~~~~~~~
	'GIT_DIFF_OPTS'::
	'GIT_EXTERNAL_DIFF'::
	see the "generating patches" section in :
	link:git-diff-cache.html[git-diff-cache];
	link:git-diff-files.html[git-diff-files];
	link:git-diff-tree.html[git-diff-tree]

	Discussion[[Discussion]]
	------------------------
	include::../README[]

	Author
	------
	Written by Linus Torvalds <torvalds@osdl.org> and the git-list <git@vger.kernel.org>.

	Documentation
	--------------
	Documentation by David Greaves, Junio C Hamano and the git-list <git@vger.kernel.org>.

	GIT
	---
	Part of the link:git.html[git] suite