---

sudo cat <<EOF > /etc/apt/sources.list
deb http://deb.debian.org/debian/ testing main contrib non-free non-free-firmware
deb-src http://deb.debian.org/debian/ testing main contrib non-free non-free-firmware

deb http://deb.debian.org/debian-security/ testing-security main contrib non-free non-free-firmware
deb-src http://deb.debian.org/debian-security/ testing-security main contrib non-free non-free-firmware

deb http://deb.debian.org/debian/ testing-updates main contrib non-free non-free-firmware
deb-src http://deb.debian.org/debian/ testing-updates main contrib non-free non-free-firmware
EOF