GNOME
GNOME guide
logo and wallpaper
# 1. Change/Remove the logo via native GSettings
sudo gsettings set org.gnome.login-screen logo '/path/to/logo.png'
# 2. Update system dconf database
sudo dconf update
GNOME extensions cli
gnome-extensions enable uuid
gnome-extensions disable uuid
gnome-extensions uninstall uuid
gnome-extensions prefs uuid
gnome-extensions install --force hornbill@lethil.me.shell-extension.zip