Sometimes, when adding a new software distribution repository, you will need to use
add-apt-repository command, but it fails like this:
sudo: add-apt-repository: command not found
It’s basically saying that
add-apt-repository is not installed on the machine. You need to install it. Since, it stays in Python common package, so we need to install that one in order to get
add-apt-repository into system.
$ sudo apt-get install software-properties-common python-software-properties
add-apt-repository should be ready to use on your computer.