davide@davide-desktop:~$ cat /etc/apt/sources.list.d/michael-gruz-canon-stable-precise.list 
# deb http://ppa.launchpad.net/michael-gruz/canon-stable/ubuntu trusty main # disabilitato durante l'avanzamento a trusty
# deb-src http://ppa.launchpad.net/michael-gruz/canon-stable/ubuntu trusty main # disabilitato durante l'avanzamento a trusty
davide@davide-desktop:~$