gethead(1) on Linux
The text ef6f05801484, as Debian 8 (Jessie), Debian 7 (Wheezy) shipped it.
Print FITS or IRAF header keyword values
Flags it lists
-
-a -
-d -
-e -
-f -
-g -
-h -
-n -
-o -
-p -
-t -
-u -
-v