bl(1) on Linux
The text cb48db4b2bf9, as Debian 2.2 (Potato), Debian 2.1 (Slink), Debian 1.3 (Bo) shipped it.
blinkenlights: blink keyboard LEDs
Flags it lists
-
-C -
-N -
-S -
-b -
-c -
-d -
-k -
-l -
-r