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+git-fsck-objects(1)
+===================
+
+NAME
+----
+git-fsck-objects - Verifies the connectivity and validity of the objects in the database
+
+
+SYNOPSIS
+--------
+'git-fsck-objects' [--tags] [--root] [--unreachable] [--cache] [--standalone | --full] [--strict] [<object>*]
+
+DESCRIPTION
+-----------
+Verifies the connectivity and validity of the objects in the database.
+
+OPTIONS
+-------
+<object>::
+	An object to treat as the head of an unreachability trace.
++
+If no objects are given, git-fsck-objects defaults to using the
+index file and all SHA1 references in .git/refs/* as heads.
+
+--unreachable::
+	Print out objects that exist but that aren't readable from any
+	of the reference nodes.
+
+--root::
+	Report root nodes.
+
+--tags::
+	Report tags.
+
+--cache::
+	Consider any object recorded in the index also as a head node for
+	an unreachability trace.
+
+--standalone::
+	Limit checks to the contents of GIT_OBJECT_DIRECTORY
+	($GIT_DIR/objects), making sure that it is consistent and
+	complete without referring to objects found in alternate
+	object pools listed in GIT_ALTERNATE_OBJECT_DIRECTORIES,
+	nor packed git archives found in $GIT_DIR/objects/pack;
+	cannot be used with --full.
+
+--full::
+	Check not just objects in GIT_OBJECT_DIRECTORY
+	($GIT_DIR/objects), but also the ones found in alternate
+	object pools listed in GIT_ALTERNATE_OBJECT_DIRECTORIES,
+	and in packed git archives found in $GIT_DIR/objects/pack
+	and corresponding pack subdirectories in alternate
+	object pools; cannot be used with --standalone.
+
+--strict::
+	Enable more strict checking, namely to catch a file mode
+	recorded with g+w bit set, which was created by older
+	versions of git.  Existing repositories, including the
+	Linux kernel, git itself, and sparse repository have old
+	objects that triggers this check, but it is recommended
+	to check new projects with this flag.
+
+It tests SHA1 and general object sanity, and it does full tracking of
+the resulting reachability and everything else. It prints out any
+corruption it finds (missing or bad objects), and if you use the
+'--unreachable' flag it will also print out objects that exist but
+that aren't readable from any of the specified head nodes.
+
+So for example
+
+	git-fsck-objects --unreachable HEAD $(cat .git/refs/heads/*)
+
+will do quite a _lot_ of verification on the tree. There are a few
+extra validity tests to be added (make sure that tree objects are
+sorted properly etc), but on the whole if "git-fsck-objects" is happy, you
+do have a valid tree.
+
+Any corrupt objects you will have to find in backups or other archives
+(ie you can just remove them and do an "rsync" with some other site in
+the hopes that somebody else has the object you have corrupted).
+
+Of course, "valid tree" doesn't mean that it wasn't generated by some
+evil person, and the end result might be crap. git is a revision
+tracking system, not a quality assurance system ;)
+
+Extracted Diagnostics
+---------------------
+
+expect dangling commits - potential heads - due to lack of head information::
+	You haven't specified any nodes as heads so it won't be
+	possible to differentiate between un-parented commits and
+	root nodes.
+
+missing sha1 directory '<dir>'::
+	The directory holding the sha1 objects is missing.
+
+unreachable <type> <object>::
+	The <type> object <object>, isn't actually referred to directly
+	or indirectly in any of the trees or commits seen. This can
+	mean that there's another root node that you're not specifying
+	or that the tree is corrupt. If you haven't missed a root node
+	then you might as well delete unreachable nodes since they
+	can't be used.
+
+missing <type> <object>::
+	The <type> object <object>, is referred to but isn't present in
+	the database.
+
+dangling <type> <object>::
+	The <type> object <object>, is present in the database but never
+	'directly' used. A dangling commit could be a root node.
+
+warning: git-fsck-objects: tree <tree> has full pathnames in it::
+	And it shouldn't...
+
+sha1 mismatch <object>::
+	The database has an object who's sha1 doesn't match the
+	database value.
+	This indicates a serious data integrity problem.
+
+Environment Variables
+---------------------
+
+GIT_OBJECT_DIRECTORY::
+	used to specify the object database root (usually $GIT_DIR/objects)
+
+GIT_INDEX_FILE::
+	used to specify the index file of the index
+
+GIT_ALTERNATE_OBJECT_DIRECTORIES::
+	used to specify additional object database roots (usually unset)
+
+Author
+------
+Written by Linus Torvalds <torvalds@osdl.org>
+
+Documentation
+--------------
+Documentation by David Greaves, Junio C Hamano and the git-list <git@vger.kernel.org>.
+
+GIT
+---
+Part of the gitlink:git[7] suite
+