If you like me stumble upon a machine running a version of Ubuntu that has become depreciated (End of Life), then fear not!
Fixing your broken sources.list
The first way I’ve noticed that something was wrong, was when I ran “apt-get update” and got a bunch of “404”‘s from our update server. But after some searching on the web I found that you can just replace the “archive.ubuntu.com” to “old-releases.ubuntu.com” in your /etc/apt/sources.list and use Ubuntu:s archive server to update your machine to the “latest and greatest” for your release.
sudo sed -i -re 's/([a-z]{2}\.)?archive.ubuntu.com|security.ubuntu.com/old-releases.ubuntu.com/g' /etc/apt/sources.list
sudo apt-get update && sudo apt-get dist-upgrade
You should now have a system that is as much up to date as possible, please consider doing a release upgrade now so you can continue to receive updates and security patches!
To upgrade to a new release:
Once you have performed the above steps to switch to the old-releases mirrors, update the Update Manager and then do do-release-upgrade:
sudo apt-get update sudo apt-get install update-manager-core sudo do-release-upgrade
