ttt(1) on Linux
The text 488e4f143471, as Debian 6.0 (Squeeze), Debian 5.0 (Lenny), Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.
a standalone program for local, real-time, graphical traffic-monitoring.
Flags it lists
-
-interface -
-interval -
-yscale