GNU nano 4.2            /usr/bin/theme-switcher-auto.sh                       

time=$(date +"%H:%M")

# List and set your gnome-terminal profiles:
# gsettings get org.gnome.Terminal.ProfilesList list
terminal_dark='b1dcc9dd-5262-4d8d-a863-c897e6d979b9'
terminal_light='e51e292e-14cf-4aad-b9e7-adb9c8fdedfc'

if [[ $time > '20:00' ]] || [[ $time < '06:00' ]]; then
    gsettings set org.gnome.desktop.interface gtk-theme 'Adwaita-dark'
    gsettings set org.gnome.desktop.background picture-uri "/home/$USER/Picture>
    gsettings set org.gnome.Terminal.ProfilesList default $terminal_dark
    exit 0
else
    gsettings set org.gnome.desktop.interface gtk-theme 'Adwaita'
    gsettings set org.gnome.desktop.background picture-uri "/home/$USER/Picture>
    gsettings set org.gnome.Terminal.ProfilesList default $terminal_light
    exit 0
fi