file(1) on FreeBSD
The text 488bd4cce67c, as FreeBSD 5.1-RELEASE shipped it.
determine file type
Flags it lists
-
-C -
-F -
-L -
-N -
-b -
-c -
-f -
-i -
-k -
-m -
-n -
-s -
-v -
-z