du

This is how to find the largest folders that eat the disk space.

Disk Space Measure

sudo apt install ncdu
sudo ncdu /

Sort the folders according to size and display them in human readable format, largest first.

$[path]$

du -s $path$/* | sort -nr| cut -f 2-|xargs -i du -sh {}
sudo du -s ./* | sort -nr| cut -f 2-|xargs -i sudo du -sh {}

Some alternative commands

du -hs $path$/*
du -h --max-depth=1 $path$
du -sk $path$