Ripeto sono anni che non tocco, alcune righe, anche se inutili/non più
valide, solo per esempio:
X-comment: 20080910 Aggiunta distro unstable oltre alla pre-esistente
testing
Package: *
Pin: release a=testing,l=debian-security
Pin-Priority: 560
Package: *
Pin: release a=wheezy-backports,l=Debian Backports
Pin-Priority: 565
Package: *
Pin: release o=volatile.debian.org,l=debian-volatile
Pin-Priority: 555
X-comment: Testing alta priorita`
Package: *
Pin: release a=testing,l=debian
Pin-Priority: 550
Package: *
Pin: release a=testing-proposed-updates,l=Debian
Pin-Priority: 540
Package: *
Pin: release a=stable,l=Debian-Security
Pin-Priority: 555
Package: *
Pin: release a=stable,l=Debian
Pin-Priority: 450
Package: *
Pin: release a=stable-proposed-updates,l=Debian
Pin-Priority: 240
Package: *
Pin: release a=unstable,l=Debian
Pin-Priority: 150
Package: linux-image-*
Pin: release o=Debian,a=stable,l=Debian-Security
Pin-Priority: 562