The following lines were added (+) and removed (-):
sudo sh -c "echo 'deb http://download.opensuse.org/repositories/home:/stevenpusser/xUbuntu_18.04/ /' > /etc/apt/sources.list.d/home:stevenpusser.list" sudo sh -c "echo 'deb http://download.opensuse.org/repositories/home:/stevenpusser/xUbuntu_18.04/ /' > /etc/apt/sources.list.d/palemoon.list"