xnetload -if ppp0 &

The first line of test displays the interface that this  instance  of
xnetload  is monitoring, and the amount of time that has passed since
the program was started.

Next  follow a line of text showing the incoming bytes. Three numbers
are shown; the current value, the maximum value seen in this  session
(between  ()), and the amount of bytes received (between []).

xnetload - Displays packet (or bytes) traffic and uptime for a network connection in an X history window.

version 1.9 2000-9-26

http://www.xs4all.nl/~rsmith/software/

make

make BINDIR=/opt/bin MANDIR=/opt/man/man1 install