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