Raspberry Pi
Raspbian Release Upgrade
sudo apt-get update && sudo apt-get upgrade -y
dpkg -C
apt-mark showhold
sudo sed -i 's/stretch/buster/g' /etc/apt/sources.list
sudo sed -i 's/stretch/buster/g' /etc/apt/sources.list.d/raspi.list
grep -lnr stretch /etc/apt
sudo apt-get remove apt-listchanges
sudo apt-get update && sudo apt-get full-upgrade -y
sudo apt-get autoremove -y && sudo apt-get autoclean
cat /etc/os-release
sudo rpi-update
reboot
sudo apt-get install -f
sudo aptitude update && sudo aptitude upgrade -y