vnstat

Console-based network traffic monitor
http://humdi.net/vnstat/

Current versions
1.17
HEAD

vnstat requires the following formula to be installed:
gd 2.2.5 Graphics library to dynamically manipulate images

Recent formula history

ilovezfs Use “squiggly” heredocs.
ilovezfs vnstat 1.17
ilovezfs vnstat 1.16
Mike McQuaid Use hash rockets again. (#5177)
Mike McQuaid Use Ruby 1.9+ symbol hash keys in all formulae. (#4942)

Formula code at GitHub