pasquale@pasquale-Aspire-1825PTZ:~$ sudo apt-get update | pastebinit 
[sudo] password di pasquale: 
W: The repository 'http://ppa.launchpad.net/landronimirc/skippy-xd-daily/ubuntu yakkety Release' does not have a Release file.
W: The repository 'http://ppa.launchpad.net/rgibert/ebook/ubuntu yakkety Release' does not have a Release file.
E: Impossibile recuperare http://ppa.launchpad.net/landronimirc/skippy-xd-daily/ubuntu/dists/yakkety/main/binary-i386/Packages  404  Not Found
E: Impossibile recuperare http://ppa.launchpad.net/rgibert/ebook/ubuntu/dists/yakkety/main/binary-i386/Packages  404  Not Found
E: Impossibile scaricare alcuni file di indice: saranno ignorati o verranno usati quelli vecchi.
http://paste.ubuntu.com/24172001/
pasquale@pasquale-Aspire-1825PTZ:~$