Gsettings with cron

Question

I wrote a bash script that changes the wallpaper (for GNOME3).

#!/bin/bash

# Wallpaper\'s directory.
dir=\"${HOME}/images/wallpapers/\"

# Random wallpaper.         


        

Answer 1

add export DISPLAY=:0 && export XAUTHORITY=/home/username/.Xauthority , where username is your ubuntu username. It should fix the X11 authorisation error.