Bandwidth
Monitor monthly internet Transmit and Receive bandwidth usage - Linux
...Equally, we didn't have the foresight or the money to purchase an snmp managed router, so we are unable to strip the traffic information from the router itself, rather we have to rely on the logging into our ISP, to discover if we are approaching the bandwidth limit.
Bandwidth logger, runs a daemon that notes how much traffic is passing through
your network interface.
Bandwidth logger was written to install on a system using 'systemd' but can be configured to run under 'upstart'.
An upstart script "/usr/share/bandwidth/bandwidth.upstart.conf" is included but will have to installed manually for those using 'upstart'.