Informações da última versão: Ubuntu Linux 20.10 - Groovy Gorilla
$ sudo cp /etc/apt/sources.list /etc/apt/sources.list.20070919
$ sudo gedit /etc/apt/sources.list
deb http://old-releases.ubuntu.com/ubuntu breezy main restricted universedeb http://old-releases.ubuntu.com/ubuntu breezy-updates main restricted universedeb http://old-releases.ubuntu.com/ubuntu breezy-security main restricted universe
$ sudo apt-get update