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-git-cat-file(1)
-===============
-
-NAME
-----
-git-cat-file - Provide content or type and size information for repository objects
-
-
-SYNOPSIS
---------
-[verse]
-'git cat-file' (-t [--allow-unknown-type]| -s [--allow-unknown-type]| -e | -p | <type> | --textconv | --filters ) [--path=<path>] <object>
-'git cat-file' (--batch | --batch-check) [ --textconv | --filters ] [--follow-symlinks]
-
-DESCRIPTION
------------
-In its first form, the command provides the content or the type of an object in
-the repository. The type is required unless `-t` or `-p` is used to find the
-object type, or `-s` is used to find the object size, or `--textconv` or
-`--filters` is used (which imply type "blob").
-
-In the second form, a list of objects (separated by linefeeds) is provided on
-stdin, and the SHA-1, type, and size of each object is printed on stdout. The
-output format can be overridden using the optional `<format>` argument. If
-either `--textconv` or `--filters` was specified, the input is expected to
-list the object names followed by the path name, separated by a single
-whitespace, so that the appropriate drivers can be determined.
-
-OPTIONS
--------
-<object>::
-	The name of the object to show.
-	For a more complete list of ways to spell object names, see
-	the "SPECIFYING REVISIONS" section in linkgit:gitrevisions[7].
-
--t::
-	Instead of the content, show the object type identified by
-	<object>.
-
--s::
-	Instead of the content, show the object size identified by
-	<object>.
-
--e::
-	Exit with zero status if <object> exists and is a valid
-	object. If <object> is of an invalid format exit with non-zero and
-	emits an error on stderr.
-
--p::
-	Pretty-print the contents of <object> based on its type.
-
-<type>::
-	Typically this matches the real type of <object> but asking
-	for a type that can trivially be dereferenced from the given
-	<object> is also permitted.  An example is to ask for a
-	"tree" with <object> being a commit object that contains it,
-	or to ask for a "blob" with <object> being a tag object that
-	points at it.
-
---textconv::
-	Show the content as transformed by a textconv filter. In this case,
-	<object> has to be of the form <tree-ish>:<path>, or :<path> in
-	order to apply the filter to the content recorded in the index at
-	<path>.
-
---filters::
-	Show the content as converted by the filters configured in
-	the current working tree for the given <path> (i.e. smudge filters,
-	end-of-line conversion, etc). In this case, <object> has to be of
-	the form <tree-ish>:<path>, or :<path>.
-
---path=<path>::
-	For use with --textconv or --filters, to allow specifying an object
-	name and a path separately, e.g. when it is difficult to figure out
-	the revision from which the blob came.
-
---batch::
---batch=<format>::
-	Print object information and contents for each object provided
-	on stdin.  May not be combined with any other options or arguments
-	except `--textconv` or `--filters`, in which case the input lines
-	also need to specify the path, separated by whitespace.  See the
-	section `BATCH OUTPUT` below for details.
-
---batch-check::
---batch-check=<format>::
-	Print object information for each object provided on stdin.  May
-	not be combined with any other options or arguments except
-	`--textconv` or `--filters`, in which case the input lines also
-	need to specify the path, separated by whitespace.  See the
-	section `BATCH OUTPUT` below for details.
-
---batch-all-objects::
-	Instead of reading a list of objects on stdin, perform the
-	requested batch operation on all objects in the repository and
-	any alternate object stores (not just reachable objects).
-	Requires `--batch` or `--batch-check` be specified. Note that
-	the objects are visited in order sorted by their hashes.
-
---buffer::
-	Normally batch output is flushed after each object is output, so
-	that a process can interactively read and write from
-	`cat-file`. With this option, the output uses normal stdio
-	buffering; this is much more efficient when invoking
-	`--batch-check` on a large number of objects.
-
---unordered::
-	When `--batch-all-objects` is in use, visit objects in an
-	order which may be more efficient for accessing the object
-	contents than hash order. The exact details of the order are
-	unspecified, but if you do not require a specific order, this
-	should generally result in faster output, especially with
-	`--batch`.  Note that `cat-file` will still show each object
-	only once, even if it is stored multiple times in the
-	repository.
-
---allow-unknown-type::
-	Allow -s or -t to query broken/corrupt objects of unknown type.
-
---follow-symlinks::
-	With --batch or --batch-check, follow symlinks inside the
-	repository when requesting objects with extended SHA-1
-	expressions of the form tree-ish:path-in-tree.  Instead of
-	providing output about the link itself, provide output about
-	the linked-to object.  If a symlink points outside the
-	tree-ish (e.g. a link to /foo or a root-level link to ../foo),
-	the portion of the link which is outside the tree will be
-	printed.
-+
-This option does not (currently) work correctly when an object in the
-index is specified (e.g. `:link` instead of `HEAD:link`) rather than
-one in the tree.
-+
-This option cannot (currently) be used unless `--batch` or
-`--batch-check` is used.
-+
-For example, consider a git repository containing:
-+
---
-	f: a file containing "hello\n"
-	link: a symlink to f
-	dir/link: a symlink to ../f
-	plink: a symlink to ../f
-	alink: a symlink to /etc/passwd
---
-+
-For a regular file `f`, `echo HEAD:f | git cat-file --batch` would print
-+
---
-	ce013625030ba8dba906f756967f9e9ca394464a blob 6
---
-+
-And `echo HEAD:link | git cat-file --batch --follow-symlinks` would
-print the same thing, as would `HEAD:dir/link`, as they both point at
-`HEAD:f`.
-+
-Without `--follow-symlinks`, these would print data about the symlink
-itself.  In the case of `HEAD:link`, you would see
-+
---
-	4d1ae35ba2c8ec712fa2a379db44ad639ca277bd blob 1
---
-+
-Both `plink` and `alink` point outside the tree, so they would
-respectively print:
-+
---
-	symlink 4
-	../f
-
-	symlink 11
-	/etc/passwd
---
-
-
-OUTPUT
-------
-If `-t` is specified, one of the <type>.
-
-If `-s` is specified, the size of the <object> in bytes.
-
-If `-e` is specified, no output, unless the <object> is malformed.
-
-If `-p` is specified, the contents of <object> are pretty-printed.
-
-If <type> is specified, the raw (though uncompressed) contents of the <object>
-will be returned.
-
-BATCH OUTPUT
-------------
-
-If `--batch` or `--batch-check` is given, `cat-file` will read objects
-from stdin, one per line, and print information about them. By default,
-the whole line is considered as an object, as if it were fed to
-linkgit:git-rev-parse[1].
-
-You can specify the information shown for each object by using a custom
-`<format>`. The `<format>` is copied literally to stdout for each
-object, with placeholders of the form `%(atom)` expanded, followed by a
-newline. The available atoms are:
-
-`objectname`::
-	The 40-hex object name of the object.
-
-`objecttype`::
-	The type of the object (the same as `cat-file -t` reports).
-
-`objectsize`::
-	The size, in bytes, of the object (the same as `cat-file -s`
-	reports).
-
-`objectsize:disk`::
-	The size, in bytes, that the object takes up on disk. See the
-	note about on-disk sizes in the `CAVEATS` section below.
-
-`deltabase`::
-	If the object is stored as a delta on-disk, this expands to the
-	40-hex sha1 of the delta base object. Otherwise, expands to the
-	null sha1 (40 zeroes). See `CAVEATS` below.
-
-`rest`::
-	If this atom is used in the output string, input lines are split
-	at the first whitespace boundary. All characters before that
-	whitespace are considered to be the object name; characters
-	after that first run of whitespace (i.e., the "rest" of the
-	line) are output in place of the `%(rest)` atom.
-
-If no format is specified, the default format is `%(objectname)
-%(objecttype) %(objectsize)`.
-
-If `--batch` is specified, the object information is followed by the
-object contents (consisting of `%(objectsize)` bytes), followed by a
-newline.
-
-For example, `--batch` without a custom format would produce:
-
-------------
-<sha1> SP <type> SP <size> LF
-<contents> LF
-------------
-
-Whereas `--batch-check='%(objectname) %(objecttype)'` would produce:
-
-------------
-<sha1> SP <type> LF
-------------
-
-If a name is specified on stdin that cannot be resolved to an object in
-the repository, then `cat-file` will ignore any custom format and print:
-
-------------
-<object> SP missing LF
-------------
-
-If a name is specified that might refer to more than one object (an ambiguous short sha), then `cat-file` will ignore any custom format and print:
-
-------------
-<object> SP ambiguous LF
-------------
-
-If --follow-symlinks is used, and a symlink in the repository points
-outside the repository, then `cat-file` will ignore any custom format
-and print:
-
-------------
-symlink SP <size> LF
-<symlink> LF
-------------
-
-The symlink will either be absolute (beginning with a /), or relative
-to the tree root.  For instance, if dir/link points to ../../foo, then
-<symlink> will be ../foo.  <size> is the size of the symlink in bytes.
-
-If --follow-symlinks is used, the following error messages will be
-displayed:
-
-------------
-<object> SP missing LF
-------------
-is printed when the initial symlink requested does not exist.
-
-------------
-dangling SP <size> LF
-<object> LF
-------------
-is printed when the initial symlink exists, but something that
-it (transitive-of) points to does not.
-
-------------
-loop SP <size> LF
-<object> LF
-------------
-is printed for symlink loops (or any symlinks that
-require more than 40 link resolutions to resolve).
-
-------------
-notdir SP <size> LF
-<object> LF
-------------
-is printed when, during symlink resolution, a file is used as a
-directory name.
-
-CAVEATS
--------
-
-Note that the sizes of objects on disk are reported accurately, but care
-should be taken in drawing conclusions about which refs or objects are
-responsible for disk usage. The size of a packed non-delta object may be
-much larger than the size of objects which delta against it, but the
-choice of which object is the base and which is the delta is arbitrary
-and is subject to change during a repack.
-
-Note also that multiple copies of an object may be present in the object
-database; in this case, it is undefined which copy's size or delta base
-will be reported.
-
-GIT
----
-Part of the linkgit:git[1] suite