makefs(8) on FreeBSD
The text 620d11648362, as FreeBSD 7.4-RELEASE shipped it.
create a file system image from a directory tree
Flags it lists
-
-B -
-F -
-M -
-N -
-S -
-b -
-d -
-f -
-m -
-o -
-s -
-t -
-x