rosario@rosario-Satellite-C650:~$ sudo apt-get update
[sudo] password for rosario: 
Trovato http://repository.spotify.com stable InRelease
Ign http://ubuntu.mirror.garr.it trusty InRelease                              
Ign http://extras.ubuntu.com trusty InRelease                                  
Ign http://ppa.launchpad.net trusty InRelease                                 
Ign http://ubuntu.mirror.garr.it trusty-updates InRelease                     
36% [InRelease gpgv 2.980 B] [In attesa degli header] [In attesa degli header] Couldn't create tempfiles for splitting up /var/lib/apt/lists/repository.spotify.Ign http://repository.spotify.com stable InRelease                             
Trovato http://extras.ubuntu.com trusty Release.gpg                            
Ign http://ubuntu.mirror.garr.it trusty-security InRelease                    
Trovato http://ppa.launchpad.net trusty Release.gpg                           
Ign http://repository.spotify.com stable/non-free amd64 Packages/DiffIndex    
Scaricamento di:1 http://ubuntu.mirror.garr.it trusty Release.gpg [933 B]     
Trovato http://extras.ubuntu.com trusty Release                                
W: Errore GPG: http://repository.spotify.com stable InRelease: Impossibile eseguire "gpgv" per verificare la firma (forse gpgv non è installato)
E: Couldn't create temporary file to work with /var/lib/apt/lists/extras.ubuntu.com_ubuntu_dists_trusty_Release - mkstemp (28: Spazio esaurito sul device)
E: dpkg è stato interrotto. È necessario eseguire "sudo dpkg --configure -a" per correggere il problema. 
rosario@rosario-Satellite-C650:~$