fsck_ffs(8) on OpenBSD
The text c1c62c1084c6, as OpenBSD 4.6, OpenBSD 4.5, OpenBSD 4.4, OpenBSD 4.3, OpenBSD 4.2 shipped it.
Fast File System consistency check and interactive repair
Flags it lists
-
-b -
-c -
-f -
-m -
-n -
-y