Ubuntu upgrade from 17.04 to 18.04

Upgrade to 17.04 to 17.10

sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak #to be safe

sudo sed -i -re ‘s/old-releases.ubuntu.com/archive.ubuntu.com/g’ /etc/apt/sources.list

sudo sed -i -re ‘s/zesty/artful/g’ /etc/apt/sources.list

sudo apt update

sudo apt dist-upgrade

sudo apt autoremove

(Links says to use aptitude instead of apt-get)

Upgrade from 17.10 to 18.04: EOLUpgrades

Replace everything in /etc/apt/sources.list with this:

EOL upgrade sources.list

Required

deb http://old-releases.ubuntu.com/ubuntu/ artful main restricted universe multiverse

deb http://old-releases.ubuntu.com/ubuntu/ artful-updates main restricted universe multiverse

deb http://old-releases.ubuntu.com/ubuntu/ artful-security main restricted universe multiverse

Optional

#deb http://old-releases.ubuntu.com/ubuntu/ artful-backports main restricted universe multiverse

Then run the upgrade:

apt-get update

apt-get dist-upgrade

do-release-upgrade

Do what it says when asked and wait for it to finish and you should be done.