deb http://apt.pearllinux.com rolltide main import upstream backport deb http://ports.ubuntu.com/ubuntu-ports bionic main restricted universe multiverse deb http://ports.ubuntu.com/ubuntu-ports bionic-updates main restricted universe multiverse deb http://ports.ubuntu.com/ubuntu-ports bionic-backports main restricted universe multiverse deb http://ports.ubuntu.com/ubuntu-ports/ bionic-security main restricted universe multiverse deb http://archive.canonical.com/ubuntu/ bionic partner