cat /etc/apt/sources.list
deb http://ftp.us.debian.org/debian/ stable main contrib non-free
deb http://security.debian.org/ stable/updates main contrib non-free
deb http://ftp.us.debian.org/debian/ testing main contrib non-free
deb http://security.debian.org/ testing/updates main contrib non-free
deb http://ftp.us.debian.org/debian/ unstable main contrib non-free
deb-src http://ftp.us.debian.org/debian/ experimental main contrib non-free
deb-src http://ftp.us.debian.org/debian/ stable main contrib non-free
deb-src http://security.debian.org/ stable/updates main contrib non-free
deb-src http://ftp.us.debian.org/debian/ testing main contrib non-free
deb-src http://security.debian.org/ testing/updates main contrib non-free
deb-src http://ftp.us.debian.org/debian/ unstable main contrib non-free
#deb http://ftp.us.debian.org/debian/ experimental main contrib non-free