I use i3blocks and this set of bash scripts to generate my status line for the i3 window manager (for more information look at https://github.com/i3/i3 or https://i3wm.org).

Some additional config options are used in the i3blocks config, which I may will document on someday. Maybe the scripts are readable enough to work with them without documentation.

The generated status line looks something like this: