A veces es necesario saber cuantos PPA (Personal Package Archive) tenemos activados en los repositorios para visualizarlos posibles conflictos o simplemente tener constancia de ello.
Listarlos es muy sencillo, basta con poner en el terminal:
grep -i ppa.launchpad.net /etc/apt/sources.list
Por ejemplo, un salida en mi portátil otorion (a magmus lo tengo más tranqulito):
$ grep -i ppa.launchpad.net /etc/apt/sources.list
# deb http://ppa.launchpad.net/synce/ubuntu intrepid main #Synce
# deb-src http://ppa.launchpad.net/synce/ubuntu intrepid main #Synce SRC
# deb http://ppa.launchpad.net/blueman/ubuntu intrepid main #Blueman Bluetooth manager
# deb-src http://ppa.launchpad.net/blueman/ubuntu intrepid main #Blueman Bluetooth manager source
# deb http://ppa.launchpad.net/tualatrix/ubuntu intrepid main #Ubuntu Tweak
# deb-src http://ppa.launchpad.net/tualatrix/ubuntu intrepid main #Ubuntu Tweak src
# deb http://ppa.launchpad.net/deluge-team/ubuntu hardy universe
# deb http://ppa.launchpad.net/gscrot/ubuntu hardy main
# deb-src http://ppa.launchpad.net/gscrot/ubuntu hardy main
# deb http://ppa.launchpad.net/bortis/ubuntu hardy main
# deb-src http://ppa.launchpad.net/bortis/ubuntu hardy main
deb http://ppa.launchpad.net/transmissionbt/ppa/ubuntu jaunty main
deb-src http://ppa.launchpad.net/transmissionbt/ppa/ubuntu jaunty main
# deb http://ppa.launchpad.net/tualatrix/ubuntu hardy main
# deb-src http://ppa.launchpad.net/tualatrix/ubuntu hardy main
# deb http://ppa.launchpad.net/fta/ubuntu hardy main #Firefox
# deb http://ppa.launchpad.net/fta/ubuntu intrepid main #Firefox Intrepid
# deb http://ppa.launchpad.net/openoffice-pkgs/ubuntu intrepid main #OpenOffice 3.0 Intrepid
# deb-src http://ppa.launchpad.net/openoffice-pkgs/ubuntu intrepid main #OpenOffice 3.0 src Intrepid
deb http://ppa.launchpad.net/themuso/ppa/ubuntu jaunty main #PPA pulseaudio Luke Yelavich
deb http://ppa.launchpad.net/blueman/ppa/ubuntu jaunty main
deb http://ppa.launchpad.net/ubuntu-mozilla-daily/ppa/ubuntu lucid main
deb http://ppa.launchpad.net/bisigi/ppa/ubuntu jaunty main
deb http://ppa.launchpad.net/synce/ppa/ubuntu jaunty main
deb-src http://ppa.launchpad.net/synce/ppa/ubuntu jaunty main
deb http://ppa.launchpad.net/openoffice-pkgs/ppa/ubuntu jaunty main
deb-src http://ppa.launchpad.net/openoffice-pkgs/ppa/ubuntu jaunty main
###deb http://ppa.launchpad.net/kow/ppa/ubuntu jaunty main
# deb-src http://ppa.launchpad.net/kow/ppa/ubuntu jaunty main
# deb http://ppa.launchpad.net/xorg-edgers/radeon/ubuntu jaunty main
# deb-src http://ppa.launchpad.net/xorg-edgers/radeon/ubuntu jaunty main
deb http://ppa.launchpad.net/webkit-team/ppa/ubuntu jaunty main
deb-src http://ppa.launchpad.net/webkit-team/ppa/ubuntu jaunty main
deb http://ppa.launchpad.net/markuz/ppa/ubuntu jaunty main
deb-src http://ppa.launchpad.net/markuz/ppa/ubuntu jaunty main
deb http://ppa.launchpad.net/chromium-daily/ppa/ubuntu karmic main
deb-src http://ppa.launchpad.net/chromium-daily/ppa/ubuntu karmic main
deb http://ppa.launchpad.net/ubuntu-tweak-testing/ppa/ubuntu karmic main
deb-src http://ppa.launchpad.net/ubuntu-tweak-testing/ppa/ubuntu karmic main
# deb http://ppa.launchpad.net/pidgin-developers/ppa/ubuntu lucid main
deb http://ppa.launchpad.net/rvm/libs/ubuntu karmic main #MPlayer Core Libraries
deb http://ppa.launchpad.net/telepathy/ppa/ubuntu karmic main #Empathy
