fsck_ffs(8) on OpenBSD
The text ae8eb4d7c813, as OpenBSD 5.2, OpenBSD 5.1, OpenBSD 5.0, OpenBSD 4.9, OpenBSD 4.8, OpenBSD 4.7 shipped it.
Fast File System consistency check and interactive repair
Flags it lists
-
-b -
-c -
-f -
-m -
-n -
-p -
-y