Fedora 39 From a bash prompt: su – cp DesiredImage.png /usr/share/backgrounds/f39/default/f39-01-day.png cp DesiredImage.png /usr/share/backgrounds/f39/default/f39-01-night.png Fedora 38 From a bash prompt: su – cp DesiredImage.png /usr/share/backgrounds/f38/f38-01-day.png cp DesiredImage.png /usr/share/backgrounds/f38/f38-01-night.png That is it!