The file sources.list is located at /etc/apt/sources.list in any modern debian system. Any debian-based distribution may use the same file eventually.
Debian GNU/Linux etch[]
You should replace YC with your country code like: us, en, fr, etc....
#Uncomment the deb-src line if you want 'apt-get source' # the main Debian packages. deb ftp://ftp.YC.debian.org/debian/ /etch main #deb-src ftp://ftp.YC.debian.org/debian/ /etch main #security (important) deb http://secure-testing.debian.net/debian-secure-testing etch/security-updates main contrib non-free #deb-src http://secure-testing.debian.net/debian-secure-testing etch/security-updates main contrib non-free #non-free in Debian and contrib in Debian deb ftp://ftp.YC.debian.org/debian/ /etch non-free contrib #deb-src ftp://ftp.YC.debian.org/debian/ /etch non-free contrib #non-free codecs #deb ftp://ftp.nerim.net/debian-marillat/ testing main #K3b #deb http://www.planet-moll.de/debian sarge main