fsck_ffs(8) on OpenBSD
The text 23a0884a83c1, as OpenBSD 6.8, OpenBSD 6.7, OpenBSD 6.6, OpenBSD 6.5, OpenBSD 6.4, OpenBSD 6.3, OpenBSD 6.2, OpenBSD 6.1 shipped it.
Fast File System consistency check and interactive repair
Flags it lists
-
-b -
-c -
-f -
-m -
-n -
-p -
-y