I need to add PPAs on Ubuntu 14.04.3 from a file that contains a list of repositories, as follows:
sudo add-apt-repository ppa: $ (cat ppas.list)
sudo add-apt-repository $ (cat ppas.list)
cat ppas.list | xargs sudo add-apt-repository
But these don't work and the following error appears: "Error: need a single repository as argument".
Can someone assist?