efax(1) on Linux
The text 5b8294f37dfb, as Debian 1.1 (Buzz) shipped it.
send/receive faxes using Class 1 or 2 fax modems
Flags it lists
-
-c -
-d -
-f -
-g -
-h -
-i -
-l -
-o -
-q -
-r -
-s -
-v -
-w -
-x -
-z