I tried these commands from the INDI site, but they failed:

- sudo apt-get install ppa-purge
- sudo ppa-purge ppa:mutlaqja/indinightly



<strong>astro@nanopct4:~$ sudo apt-get install ppa-purge
Reading package lists... Done
Building dependency tree
Reading state information... Done
ppa-purge is already the newest version (0.2.8+bzr63).
0 upgraded, 0 newly installed, 0 to remove and 5 not upgraded.

<strong>astro@nanopct4:~$ sudo ppa-purge ppa:mutlaqja/indinightly
Updating packages lists
PPA to be removed: mutlaqja indinightly
Warning: Could not find package list for PPA: mutlaqja indinightly
astro@nanopct4:~$


My version of KStars is still the latest nighty, and when I update, it still shows the nightly repository.

I'm not familiar wit ppa-purge but to remove a repository I would use:
sudo add-apt-repository --remove ppa:mutlaqja/indinightly
as the reverse of
sudo apt-add-repository ppa:mutlaqja/indinightly
But that leaves the installed packages unchanged - which could be what you want anyway