I am using Ubuntu 16.04 and I'm running this command:
sudo add-apt-repository ppa:paolorotolo/android-studio
and I'm getting this error:
I've even tried reinstalling ca-certificates, but after that the same error occurs.
sudo apt-get install --reinstall ca-certificates
Best Answer
I was able to add it using the command above. The error message indicates that the host where the repository is stored is not resolvable by your DNS server. But I think that's probably a red-herring. Deleting the ca-certificates and then reinstalling them should work;