fsck_msdos(8) on OpenBSD
The text a04274663f98, as OpenBSD 5.5, OpenBSD 5.4, OpenBSD 5.3, OpenBSD 5.2, OpenBSD 5.1, OpenBSD 5.0, OpenBSD 4.9, OpenBSD 4.8, OpenBSD 4.7, OpenBSD 4.6, OpenBSD 4.5, OpenBSD 4.4, OpenBSD 4.3 shipped it.
DOS/Windows (FAT) file system consistency checker
Flags it lists
-
-f -
-n -
-p -
-y