Change Fedora Login Screen Wallpaper Software Effect Enterprises, Inc Posted on May 19, 2023 by SEEIMay 19, 2023 Tested with 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!