Merci pour ton aide.
$ grep -r "^deb " /etc/apt/*.list
deb
http://be.archive.ubuntu.com/ubuntu/ trusty main restricted
deb
http://be.archive.ubuntu.com/ubuntu/ trusty-updates main restricted
deb
http://be.archive.ubuntu.com/ubuntu/ trusty universe
deb
http://be.archive.ubuntu.com/ubuntu/ trusty-updates universe
deb
http://be.archive.ubuntu.com/ubuntu/ trusty multiverse
deb
http://be.archive.ubuntu.com/ubuntu/ trusty-updates multiverse
deb
http://be.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse
deb
http://be.archive.ubuntu.com/ubuntu/ trusty-security main restricted
deb
http://be.archive.ubuntu.com/ubuntu/ trusty-security universe
deb
http://be.archive.ubuntu.com/ubuntu/ trusty-security multiverse
deb
http://extras.ubuntu.com/ubuntu trusty main
deb
http://be.archive.ubuntu.com/ubuntu/ trusty-proposed main universe multiverse restricted
$ ls /etc/apt/sources.list.d/
kubuntu-ppa-ppa-trusty.list mozillateam-firefox-next-trusty.list noobslab-mint-trusty.list thefanclub-grive-tools-trusty.list webupd8team-java-trusty.list
kubuntu-ppa-ppa-trusty.list.save mozillateam-firefox-next-trusty.list.save noobslab-mint-trusty.list.save thefanclub-grive-tools-trusty.list.save webupd8team-java-trusty.list.save
linrunner-tlp-trusty.list mozillateam-thunderbird-next-trusty.list relan-exfat-trusty.list ubuntu-mozilla-daily-firefox-aurora-trusty.list xorg-edgers-ppa-trusty.list
linrunner-tlp-trusty.list.save mozillateam-thunderbird-next-trusty.list.save relan-exfat-trusty.list.save ubuntu-mozilla-daily-firefox-aurora-trusty.list.save xorg-edgers-ppa-trusty.list.save
$ apt-cache policy kde-l10n-fr
kde-l10n-fr:
Installé : 4:4.13.0-0ubuntu1
Candidat : 4:4.13.1-0ubuntu0.1~ubuntu14.04~ppa2
Table de version :
4:4.13.1-0ubuntu0.1~ubuntu14.04~ppa2 0
500
http://ppa.launchpad.net/kubuntu-ppa/ppa/ubuntu/ trusty/main amd64 Packages
*** 4:4.13.0-0ubuntu1 0
500
http://be.archive.ubuntu.com/ubuntu/ trusty/universe amd64 Packages
100 /var/lib/dpkg/status