fsck(8) on FreeBSD
The text e0540f9337dd, as FreeBSD 4.11-RELEASE, FreeBSD 4.10-RELEASE, FreeBSD 4.9-RELEASE, FreeBSD 4.8-RELEASE, FreeBSD 4.7-RELEASE, FreeBSD 4.6.2-RELEASE, FreeBSD 4.6-RELEASE, FreeBSD 4.5-RELEASE, FreeBSD 4.4-RELEASE, FreeBSD 4.3-RELEASE shipped it.
filesystem consistency check and interactive repair
Flags it lists
-
-b -
-c -
-f -
-l -
-m -
-n -
-p -
-y