Hi! following the tutorial on how to upgrade Ubuntu server from 20.04 to 22.04 here https://www.howtoforge.com/ubuntu-20-04-to-22-04-upgrade/ I ended up (as expected) wit h lots of backup files like ~, bkp, old, dpkg-old, etc. Also there are a lot of old compressed log file (after three years of smooth run, that's obvious). Is there a way or command to clean up the installation of backup files and old unneeded stuff? Thanks!