(venv)[kater ~/Downloads]$ ls /etc/apt/sources.list.d/
google-chrome.list       heroku.list.save
google-chrome.list.save  tango-controls-core-precise.list
google.list              tango-controls-core-precise.list.save
google.list.save         tiheum-equinox-precise.list
heroku.list              tiheum-equinox-precise.list.save
(venv)[kater ~/Downloads]$ ^C
(venv)[kater ~/Downloads]$ sudo ppa-purge ppa:google-chrome
Updating packages lists
PPA to be removed: ppa:google-chrome ppa:google-chrome
Warning:  Could not find package list for PPA: ppa:google-chrome
ppa:google-chrome
(venv)[kater ~/Downloads]$ sudo ppa-purge ppa:google-chrome/ppa
Updating packages lists
PPA to be removed: google-chrome ppa
Warning:  Could not find package list for PPA: google-chrome ppa
(venv)[kater ~/Downloads]$ sudo ppa-purge ppa:google-chrome.list
Updating packages lists
PPA to be removed: ppa:google-chrome.list ppa:google-chrome.list
Warning:  Could not find package list for PPA: ppa:google-chrome.list
ppa:google-chrome.list
(venv)[kater ~/Downloads]$ sudo ppa-purge ppa:heroku/ppa
Updating packages lists
PPA to be removed: heroku ppa
Warning:  Could not find package list for PPA: heroku ppa
(venv)[kater ~/Downloads]$ sudo ppa-purge ppa:heroku
Updating packages lists
PPA to be removed: ppa:heroku ppa:heroku
Warning:  Could not find package list for PPA: ppa:heroku ppa:heroku
(venv)[kater ~/Downloads]$ sudo ppa-purge heroku
Updating packages lists
PPA to be removed: heroku ppa
Warning:  Could not find package list for PPA: heroku ppa
(venv)[kater ~/Downloads]$