gitignore.txt - external/gitster/git-htmldocs - Git at Google

 gitignore(5)
 ============

 NAME
 ----
 gitignore - Specifies intentionally untracked files to ignore

 SYNOPSIS
 --------
 $XDG_CONFIG_HOME/git/ignore, $GIT_DIR/info/exclude, .gitignore

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

 A `gitignore` file specifies intentionally untracked files that
 Git should ignore.
 Files already tracked by Git are not affected; see the NOTES
 below for details.

 Each line in a `gitignore` file specifies a pattern.
 When deciding whether to ignore a path, Git normally checks
 `gitignore` patterns from multiple sources, with the following
 order of precedence, from highest to lowest (within one level of
 precedence, the last matching pattern decides the outcome):

  * Patterns read from the command line for those commands that support
  them.

  * Patterns read from a `.gitignore` file in the same directory
  as the path, or in any parent directory (up to the top-level of the working
  tree), with patterns in the higher level files being overridden by those in
  lower level files down to the directory containing the file. These patterns
  match relative to the location of the `.gitignore` file. A project normally
  includes such `.gitignore` files in its repository, containing patterns for
  files generated as part of the project build.

  * Patterns read from `$GIT_DIR/info/exclude`.

  * Patterns read from the file specified by the configuration
  variable `core.excludesFile`.

 Which file to place a pattern in depends on how the pattern is meant to
 be used.

  * Patterns which should be version-controlled and distributed to
  other repositories via clone (i.e., files that all developers will want
  to ignore) should go into a `.gitignore` file.

  * Patterns which are
  specific to a particular repository but which do not need to be shared
  with other related repositories (e.g., auxiliary files that live inside
  the repository but are specific to one user's workflow) should go into
  the `$GIT_DIR/info/exclude` file.

  * Patterns which a user wants Git to
  ignore in all situations (e.g., backup or temporary files generated by
  the user's editor of choice) generally go into a file specified by
  `core.excludesFile` in the user's `~/.gitconfig`. Its default value is
  $XDG_CONFIG_HOME/git/ignore. If $XDG_CONFIG_HOME is either not set or
  empty, $HOME/.config/git/ignore is used instead.

 The underlying Git plumbing tools, such as
 'git ls-files' and 'git read-tree', read
 `gitignore` patterns specified by command-line options, or from
 files specified by command-line options. Higher-level Git
 tools, such as 'git status' and 'git add',
 use patterns from the sources specified above.

 PATTERN FORMAT
 --------------

  - A blank line matches no files, so it can serve as a separator
  for readability.

  - A line starting with # serves as a comment.
  Put a backslash ("`\`") in front of the first hash for patterns
  that begin with a hash.

  - Trailing spaces are ignored unless they are quoted with backslash
  ("`\`").

  - An optional prefix "`!`" which negates the pattern; any
  matching file excluded by a previous pattern will become
  included again. It is not possible to re-include a file if a parent
  directory of that file is excluded. Git doesn't list excluded
  directories for performance reasons, so any patterns on contained
  files have no effect, no matter where they are defined.
  Put a backslash ("`\`") in front of the first "`!`" for patterns
  that begin with a literal "`!`", for example, "`\!important!.txt`".

  - The slash "`/`" is used as the directory separator. Separators may
  occur at the beginning, middle or end of the `.gitignore` search pattern.

  - If there is a separator at the beginning or middle (or both) of the
  pattern, then the pattern is relative to the directory level of the
  particular `.gitignore` file itself. Otherwise the pattern may also
  match at any level below the `.gitignore` level.

  - If there is a separator at the end of the pattern then the pattern
  will only match directories, otherwise the pattern can match both
  files and directories.

  - For example, a pattern `doc/frotz/` matches `doc/frotz` directory,
  but not `a/doc/frotz` directory; however `frotz/` matches `frotz`
  and `a/frotz` that is a directory (all paths are relative from
  the `.gitignore` file).

  - An asterisk "`*`" matches anything except a slash.
  The character "`?`" matches any one character except "`/`".
  The range notation, e.g. `[a-zA-Z]`, can be used to match
  one of the characters in a range. See fnmatch(3) and the
  FNM_PATHNAME flag for a more detailed description.

 Two consecutive asterisks ("`**`") in patterns matched against
 full pathname may have special meaning:

  - A leading "`**`" followed by a slash means match in all
  directories. For example, "`**/foo`" matches file or directory
  "`foo`" anywhere, the same as pattern "`foo`". "`**/foo/bar`"
  matches file or directory "`bar`" anywhere that is directly
  under directory "`foo`".

  - A trailing "`/**`" matches everything inside. For example,
  "`abc/**`" matches all files inside directory "`abc`", relative
  to the location of the `.gitignore` file, with infinite depth.

  - A slash followed by two consecutive asterisks then a slash
  matches zero or more directories. For example, "`a/**/b`"
  matches "`a/b`", "`a/x/b`", "`a/x/y/b`" and so on.

  - Other consecutive asterisks are considered regular asterisks and
  will match according to the previous rules.

 CONFIGURATION
 -------------

 The optional configuration variable `core.excludesFile` indicates a path to a
 file containing patterns of file names to exclude, similar to
 `$GIT_DIR/info/exclude`. Patterns in the exclude file are used in addition to
 those in `$GIT_DIR/info/exclude`.

 NOTES
 -----

 The purpose of gitignore files is to ensure that certain files
 not tracked by Git remain untracked.

 To stop tracking a file that is currently tracked, use
 'git rm --cached' to remove the file from the index. The filename
 can then be added to the `.gitignore` file to stop the file from
 being reintroduced in later commits.

 Git does not follow symbolic links when accessing a `.gitignore` file in
 the working tree. This keeps behavior consistent when the file is
 accessed from the index or a tree versus from the filesystem.

 EXAMPLES
 --------

  - The pattern `hello.*` matches any file or directory
  whose name begins with `hello.`. If one wants to restrict
  this only to the directory and not in its subdirectories,
  one can prepend the pattern with a slash, i.e. `/hello.*`;
  the pattern now matches `hello.txt`, `hello.c` but not
  `a/hello.java`.

  - The pattern `foo/` will match a directory `foo` and
  paths underneath it, but will not match a regular file
  or a symbolic link `foo` (this is consistent with the
  way how pathspec works in general in Git)

  - The pattern `doc/frotz` and `/doc/frotz` have the same effect
  in any `.gitignore` file. In other words, a leading slash
  is not relevant if there is already a middle slash in
  the pattern.

  - The pattern `foo/*`, matches `foo/test.json`
  (a regular file), `foo/bar` (a directory), but it does not match
  `foo/bar/hello.c` (a regular file), as the asterisk in the
  pattern does not match `bar/hello.c` which has a slash in it.

 --------------------------------------------------------------
  $ git status
  [...]
  # Untracked files:
  [...]
  # Documentation/foo.html
  # Documentation/gitignore.html
  # file.o
  # lib.a
  # src/internal.o
  [...]
  $ cat .git/info/exclude
  # ignore objects and archives, anywhere in the tree.
  *.[oa]
  $ cat Documentation/.gitignore
  # ignore generated html files,
  *.html
  # except foo.html which is maintained by hand
  !foo.html
  $ git status
  [...]
  # Untracked files:
  [...]
  # Documentation/foo.html
  [...]
 --------------------------------------------------------------

 Another example:

 --------------------------------------------------------------
  $ cat .gitignore
  vmlinux*
  $ ls arch/foo/kernel/vm*
  arch/foo/kernel/vmlinux.lds.S
  $ echo '!/vmlinux*' >arch/foo/kernel/.gitignore
 --------------------------------------------------------------

 The second .gitignore prevents Git from ignoring
 `arch/foo/kernel/vmlinux.lds.S`.

 Example to exclude everything except a specific directory `foo/bar`
 (note the `/*` - without the slash, the wildcard would also exclude
 everything within `foo/bar`):

 --------------------------------------------------------------
  $ cat .gitignore
  # exclude everything except directory foo/bar
  /*
  !/foo
  /foo/*
  !/foo/bar
 --------------------------------------------------------------

 SEE ALSO
 --------
 linkgit:git-rm[1],
 linkgit:gitrepository-layout[5],
 linkgit:git-check-ignore[1]

 GIT
 ---
 Part of the linkgit:git[1] suite
	gitignore(5)
	============

	NAME
	----
	gitignore - Specifies intentionally untracked files to ignore

	SYNOPSIS
	--------
	$XDG_CONFIG_HOME/git/ignore, $GIT_DIR/info/exclude, .gitignore

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

	A `gitignore` file specifies intentionally untracked files that
	Git should ignore.
	Files already tracked by Git are not affected; see the NOTES
	below for details.

	Each line in a `gitignore` file specifies a pattern.
	When deciding whether to ignore a path, Git normally checks
	`gitignore` patterns from multiple sources, with the following
	order of precedence, from highest to lowest (within one level of
	precedence, the last matching pattern decides the outcome):

	* Patterns read from the command line for those commands that support
	them.

	* Patterns read from a `.gitignore` file in the same directory
	as the path, or in any parent directory (up to the top-level of the working
	tree), with patterns in the higher level files being overridden by those in
	lower level files down to the directory containing the file. These patterns
	match relative to the location of the `.gitignore` file. A project normally
	includes such `.gitignore` files in its repository, containing patterns for
	files generated as part of the project build.

	* Patterns read from `$GIT_DIR/info/exclude`.

	* Patterns read from the file specified by the configuration
	variable `core.excludesFile`.

	Which file to place a pattern in depends on how the pattern is meant to
	be used.

	* Patterns which should be version-controlled and distributed to
	other repositories via clone (i.e., files that all developers will want
	to ignore) should go into a `.gitignore` file.

	* Patterns which are
	specific to a particular repository but which do not need to be shared
	with other related repositories (e.g., auxiliary files that live inside
	the repository but are specific to one user's workflow) should go into
	the `$GIT_DIR/info/exclude` file.

	* Patterns which a user wants Git to
	ignore in all situations (e.g., backup or temporary files generated by
	the user's editor of choice) generally go into a file specified by
	`core.excludesFile` in the user's `~/.gitconfig`. Its default value is
	$XDG_CONFIG_HOME/git/ignore. If $XDG_CONFIG_HOME is either not set or
	empty, $HOME/.config/git/ignore is used instead.

	The underlying Git plumbing tools, such as
	'git ls-files' and 'git read-tree', read
	`gitignore` patterns specified by command-line options, or from
	files specified by command-line options. Higher-level Git
	tools, such as 'git status' and 'git add',
	use patterns from the sources specified above.

	PATTERN FORMAT
	--------------

	- A blank line matches no files, so it can serve as a separator
	for readability.

	- A line starting with # serves as a comment.
	Put a backslash ("`\`") in front of the first hash for patterns
	that begin with a hash.

	- Trailing spaces are ignored unless they are quoted with backslash
	("`\`").

	- An optional prefix "`!`" which negates the pattern; any
	matching file excluded by a previous pattern will become
	included again. It is not possible to re-include a file if a parent
	directory of that file is excluded. Git doesn't list excluded
	directories for performance reasons, so any patterns on contained
	files have no effect, no matter where they are defined.
	Put a backslash ("`\`") in front of the first "`!`" for patterns
	that begin with a literal "`!`", for example, "`\!important!.txt`".

	- The slash "`/`" is used as the directory separator. Separators may
	occur at the beginning, middle or end of the `.gitignore` search pattern.

	- If there is a separator at the beginning or middle (or both) of the
	pattern, then the pattern is relative to the directory level of the
	particular `.gitignore` file itself. Otherwise the pattern may also
	match at any level below the `.gitignore` level.

	- If there is a separator at the end of the pattern then the pattern
	will only match directories, otherwise the pattern can match both
	files and directories.

	- For example, a pattern `doc/frotz/` matches `doc/frotz` directory,
	but not `a/doc/frotz` directory; however `frotz/` matches `frotz`
	and `a/frotz` that is a directory (all paths are relative from
	the `.gitignore` file).

	- An asterisk "`*`" matches anything except a slash.
	The character "`?`" matches any one character except "`/`".
	The range notation, e.g. `[a-zA-Z]`, can be used to match
	one of the characters in a range. See fnmatch(3) and the
	FNM_PATHNAME flag for a more detailed description.

	Two consecutive asterisks ("`**`") in patterns matched against
	full pathname may have special meaning:

	- A leading "`**`" followed by a slash means match in all
	directories. For example, "`**/foo`" matches file or directory
	"`foo`" anywhere, the same as pattern "`foo`". "`**/foo/bar`"
	matches file or directory "`bar`" anywhere that is directly
	under directory "`foo`".

	- A trailing "`/**`" matches everything inside. For example,
	"`abc/**`" matches all files inside directory "`abc`", relative
	to the location of the `.gitignore` file, with infinite depth.

	- A slash followed by two consecutive asterisks then a slash
	matches zero or more directories. For example, "`a/**/b`"
	matches "`a/b`", "`a/x/b`", "`a/x/y/b`" and so on.

	- Other consecutive asterisks are considered regular asterisks and
	will match according to the previous rules.

	CONFIGURATION
	-------------

	The optional configuration variable `core.excludesFile` indicates a path to a
	file containing patterns of file names to exclude, similar to
	`$GIT_DIR/info/exclude`. Patterns in the exclude file are used in addition to
	those in `$GIT_DIR/info/exclude`.

	NOTES
	-----

	The purpose of gitignore files is to ensure that certain files
	not tracked by Git remain untracked.

	To stop tracking a file that is currently tracked, use
	'git rm --cached' to remove the file from the index. The filename
	can then be added to the `.gitignore` file to stop the file from
	being reintroduced in later commits.

	Git does not follow symbolic links when accessing a `.gitignore` file in
	the working tree. This keeps behavior consistent when the file is
	accessed from the index or a tree versus from the filesystem.

	EXAMPLES
	--------

	- The pattern `hello.*` matches any file or directory
	whose name begins with `hello.`. If one wants to restrict
	this only to the directory and not in its subdirectories,
	one can prepend the pattern with a slash, i.e. `/hello.*`;
	the pattern now matches `hello.txt`, `hello.c` but not
	`a/hello.java`.

	- The pattern `foo/` will match a directory `foo` and
	paths underneath it, but will not match a regular file
	or a symbolic link `foo` (this is consistent with the
	way how pathspec works in general in Git)

	- The pattern `doc/frotz` and `/doc/frotz` have the same effect
	in any `.gitignore` file. In other words, a leading slash
	is not relevant if there is already a middle slash in
	the pattern.

	- The pattern `foo/*`, matches `foo/test.json`
	(a regular file), `foo/bar` (a directory), but it does not match
	`foo/bar/hello.c` (a regular file), as the asterisk in the
	pattern does not match `bar/hello.c` which has a slash in it.

	--------------------------------------------------------------
	$ git status
	[...]
	# Untracked files:
	[...]
	# Documentation/foo.html
	# Documentation/gitignore.html
	# file.o
	# lib.a
	# src/internal.o
	[...]
	$ cat .git/info/exclude
	# ignore objects and archives, anywhere in the tree.
	*.[oa]
	$ cat Documentation/.gitignore
	# ignore generated html files,
	*.html
	# except foo.html which is maintained by hand
	!foo.html
	$ git status
	[...]
	# Untracked files:
	[...]
	# Documentation/foo.html
	[...]
	--------------------------------------------------------------

	Another example:

	--------------------------------------------------------------
	$ cat .gitignore
	vmlinux*
	$ ls arch/foo/kernel/vm*
	arch/foo/kernel/vmlinux.lds.S
	$ echo '!/vmlinux*' >arch/foo/kernel/.gitignore
	--------------------------------------------------------------

	The second .gitignore prevents Git from ignoring
	`arch/foo/kernel/vmlinux.lds.S`.

	Example to exclude everything except a specific directory `foo/bar`
	(note the `/*` - without the slash, the wildcard would also exclude
	everything within `foo/bar`):

	--------------------------------------------------------------
	$ cat .gitignore
	# exclude everything except directory foo/bar
	/*
	!/foo
	/foo/*
	!/foo/bar
	--------------------------------------------------------------

	SEE ALSO
	--------
	linkgit:git-rm[1],
	linkgit:gitrepository-layout[5],
	linkgit:git-check-ignore[1]

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