1 # official debian repository:
2 deb http://ftp.debian.org/debian/ stretch main contrib non-free
3 deb-src http://ftp.debian.org/debian/ stretch main contrib non-free
6 deb http://security.debian.org/ stretch/updates main contrib
7 deb-src http://security.debian.org/ stretch/updates main contrib
10 deb http://ftp.debian.org/debian/ stretch-backports main contrib non-free
11 deb-src http://ftp.debian.org/debian/ stretch-backports main contrib non-free