rm: cannot remove `/etc/apt/sources.list.d/dropbox.list.save': No such file or directory
rm: cannot remove `unity-team-hud-precise.list': No such file or directory
rm: cannot remove `/etc/apt/sources/list.d/kilian-f_lux-precise.list': No such file or directory
rm: cannot remove `unity-team-hud-precise.list.save': No such file or directory