makefs(8) on FreeBSD
The text a5b13d82c52f, as FreeBSD 9.1-RELEASE shipped it.
create a file system image from a directory tree or a mtree manifest
Flags it lists
-
-B -
-F -
-M -
-N -
-S -
-b -
-d -
-f -
-m -
-o -
-s -
-t -
-x