$ ls -al  /etc/apt/sources.list.d/
total 44
drwxr-xr-x 2 root root 4096 Oct 28 13:11 .
drwxr-xr-x 6 root root 4096 Oct 28 14:47 ..
-rw-r--r-- 1 root root  220 Oct 28 17:15 caffeine-developers-ppa-precise.list
-rw-r--r-- 1 root root  150 Oct 28 13:28 caffeine-developers-ppa-precise.list.distUpgrade
-rw-r--r-- 1 root root  220 Oct 28 17:15 caffeine-developers-ppa-precise.list.save
-rw-r--r-- 1 root root  210 Oct 28 17:15 chromium-daily-ppa-oneiric.list
-rw-r--r-- 1 root root  210 Oct 28 13:28 chromium-daily-ppa-oneiric.list.distUpgrade
-rw-r--r-- 1 root root  210 Oct 28 17:15 chromium-daily-ppa-oneiric.list.save
-rw-r--r-- 1 root root  208 Oct 28 17:15 gnomebaker-stable-oneiric.list
-rw-r--r-- 1 root root  208 Oct 28 13:28 gnomebaker-stable-oneiric.list.distUpgrade
-rw-r--r-- 1 root root  208 Oct 28 17:15 gnomebaker-stable-oneiric.list.save