+++ /dev/null
-deb http://archive.ubuntu.com/ubuntu/ focal main universe
-deb http://archive.ubuntu.com/ubuntu/ focal-updates main universe
-deb http://archive.ubuntu.com/ubuntu/ focal-security main universe
-deb http://archive.ubuntu.com/ubuntu/ focal-backports main universe
-deb-src http://archive.ubuntu.com/ubuntu/ focal main universe
-deb-src http://archive.ubuntu.com/ubuntu/ focal-updates main universe
-deb-src http://archive.ubuntu.com/ubuntu/ focal-security main universe
-deb-src http://archive.ubuntu.com/ubuntu/ focal-backports main universe