Install wmfsm by entering the following commands in the terminal:
sudo apt update sudo apt install wmfsm
Description:
WindowMaker dock app for monitoring filesystem usage
Nice graphical 'df', showing you to what degree the mounted filesystems are used. . Another X11 dockable application designed for WindowMaker. It works with other window managers as well.
Homepage: http://windowmaker.org/dockapps/?name=wmfsm
Version: 0.36-1build1
Section: universe/utils