deb http://ports.ubuntu.com/ubuntu-ports/ bionic main restricted universe
deb-src http://ports.ubuntu.com/ubuntu-ports/ bionic main restricted universe

deb http://ports.ubuntu.com/ubuntu-ports/ bionic-updates main restricted universe
deb-src http://ports.ubuntu.com/ubuntu-ports/ bionic-updates main restricted universe

deb http://ports.ubuntu.com/ubuntu-ports/ bionic-backports main restricted
deb-src http://ports.ubuntu.com/ubuntu-ports/ bionic-backports main restricted

deb http://ports.ubuntu.com/ubuntu-ports/ bionic-security main restricted universe multiverse
deb-src http://ports.ubuntu.com/ubuntu-ports/ bionic-security main restricted universe multiverse