Informações da última versão: Ubuntu Linux 20.10 - Groovy Gorilla
alt+F2, sudo gedit /etc/apt/sources.list
deb http://www.virtualbox.org/debian feisty
#AUTOMATIX REPOS STARTdeb http://archive.canonical.com/ubuntu feisty-commercial maindeb http://archive.ubuntu.com/ubuntu feisty-backports main restricted universe multiversedeb http://archive.ubuntu.com/ubuntu feisty-updates universe multiversedeb http://archive.ubuntu.com/ubuntu feisty-security main restricted universe multiverse#AUTOMATIX REPOS END