A lightweight command line ethernet speed monitor

Installation:

$ sudo ./install.py

Uninstallation:

$ sudo ./uninstall.py

Usage e.g:

$ ethspeed eth0

download: 0.3340 KBps       upload: 0.0000 KBps

for multiple ports , gives the combined value

$ ethspeed eth0 eth1

download: 70.3340 KBps       upload: 0.0000 KBps