kshd(8) on Linux
The text a48dcff8355d, as Debian 3.1 (Sarge) shipped it.
kerberized remote shell server
Flags it lists
-
-4 -
-5 -
-A -
-D -
-L -
-M -
-P -
-S -
-c -
-e -
-i -
-k -
-w