deb http://us.archive.ubuntu.com/ubuntu/ focal main universe
deb http://us.archive.ubuntu.com/ubuntu/ focal-updates main universe
deb http://us.archive.ubuntu.com/ubuntu/ focal-security main universe
deb-src http://us.archive.ubuntu.com/ubuntu/ focal main universe
deb-src http://us.archive.ubuntu.com/ubuntu/ focal-updates main universe
deb-src http://us.archive.ubuntu.com/ubuntu/ focal-security main universe