Here's an example:
sudo add-apt-repository -y ppa:fred/ppa Error reading https://launchpad.net/api/1.0/~fred/+archive/ppa: Not Found
Then looking in /etc/apt/sources.list.d/ -rw-r--r-- 1 root root 120 Nov 13 20:59 fred-ppa-quantal.list
Here's an example:
sudo add-apt-repository -y ppa:fred/ppa /launchpad. net/api/ 1.0/~fred/ +archive/ ppa: Not Found
Error reading https:/
Then looking in /etc/apt/ sources. list.d/ quantal. list
-rw-r--r-- 1 root root 120 Nov 13 20:59 fred-ppa-