klogind(8) on Linux
The text 5f0b02a867dc, as Debian 3.1 (Sarge) shipped it.
remote login server
Flags it lists
-
-4 -
-5 -
-D -
-L -
-M -
-P -
-S -
-c -
-e -
-f -
-i -
-k -
-p -
-w