echo 'deb http://ftp.debian.org/debian/ jessie-backports main contrib' \
' non-free' >> /etc/apt/sources.list
echo 'deb http://ftp.debian.org/debian/ testing main contrib non-free' \
echo 'deb http://ftp.debian.org/debian/ jessie-backports main contrib' \
' non-free' >> /etc/apt/sources.list
echo 'deb http://ftp.debian.org/debian/ testing main contrib non-free' \