Linux: Get Realtime Bandwidth Statistics Using Stock Commands
By Daniel Miessler on November 15th, 2006: Tagged as Linux | Sysadmin
Have you ever been in Linux and wanted to watch how much bandwidth was going in and out of your box? Most have, and here’s a very simply way to do it without a GUI or installing anything extra:
# watch -n1 "ifconfig eth0 | grep Mb"
RX bytes:105209490 (100.3 Mb) TX bytes:448524558 (427.7 Mb)
What you end up with is a counter of your current bandwidth usage that gets updated every second. It’s not sexy but it gives you a decent feel for how much action your NIC is seeing.
Just change your network interface in the grep bit to the one you want and you’re all set. Oh, and if you’re using Debian or Ubuntu, you may want to try grepping for “Mib” instead of “Mb”.
Enjoy.:
