NUsage is a lightweight tool that displays network usage for a specified interface since system boot. It reads data from the /proc/net/dev file, so it works only on Linux systems.

You can install NUsage using go install command.

go install github.com/enindu/nusage

Here is an example of how to use NUsage.

nusage -device [device name] -format [data format] -interval [update interval]