Usually when editing system files and installing programs you need root/superuser privileges. Always remember to update the system afterwards. Type “exit” to logout from the root/superuser account, which should only be used temporarily for editing/installing and not for normal computer use unless the system asks for it. Also, when installing packages and applications you might sometimes be prompted with the information that the installation requires some more packages. Since the questions comes during the installation process it’s safe to say “Yes.”