Viewing network bandwidth usage with bmon
Bmon is a monitoring and debugging tool that runs in a terminal window and captures network statistics, offering options on how and how much data will be displayed and displayed in a form that is easy to understand.
To check if bmon is installed on your system, use the which command:
$ which bmon /usr/bin/bmon
Getting bmon
On Debian systems, use sudo apt-get install bmon to install the tool.