/etc/apt$ cat sources.list
deb cdrom:[Debian GNU/Linux 3.1 r0a _Sarge_ - Official i386 Binary-4 (20050607)]/ unstable contrib main
deb cdrom:[Debian GNU/Linux 3.1 r0a _Sarge_ - Official i386 Binary-3 (20050607)]/ unstable contrib main
deb cdrom:[Debian GNU/Linux 3.1 r0a _Sarge_ - Official i386 Binary-2 (20050607)]/ unstable contrib main
deb cdrom:[Debian GNU/Linux 3.1 r0a _Sarge_ - Official i386 Binary-1 (20050607)]/ unstable contrib main
deb [url]http://security.debian.org/[/url] stable/updates main contrib