// Clean up packages
$ sudo apt-get autoremove
// Check your cache
$ sudo du -sh /var/cache/apt
$ sudo apt-get clean
// check disk-usage
$ journalctl –disk-usage
$ sudo journalctl –vacuum-time=1d
// Check Snaps
$ du -h /var/lib/snapd/snaps
$ nano rmold.sh
#!/bin/bash
# Removes old revisions of snaps
# CLOSE ALL SNAPS BEFORE RUNNING THIS
set -eu
snap list --all | awk '/disabled/{print $1, $3}' |
while read snapname revision; do
snap remove "$snapname" --revision="$revision"
done
$ chmod +x rmold.sh
$ ./rmold.sh