fsck.ext4dev(8) on Linux
The text 3c9f3fab25b9, as Debian 7 (Wheezy) shipped it.
check a Linux ext2/ext3/ext4 file system
Flags it lists
-
-D -
-F -
-V -
-a -
-c -
-d -
-f -
-k -
-n -
-p -
-r -
-t -
-v -
-y