beacon(8) on Linux
The text ea4b38615bfd, as Debian 6.0 (Squeeze), Debian 5.0 (Lenny), Debian 4.0 (Etch), Debian 3.1 (Sarge), Debian 3.0 (Woody), Debian 2.2 (Potato), Debian 2.1 (Slink), Debian 2.0 (Hamm) shipped it.
transmit periodic messages on an AX.25 port.
Flags it lists
-
-c -
-d -
-l -
-m -
-s -
-t -
-v