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

Also see this solution that work for me: https://unix.stackexchange.com/questions/111188/using-notify-send-with-cron#answer-111190 :

You need to set the DBUS_SESSION_BUS_ADDRESS variable. By default cron does not have access to the variable. To remedy this put the following script somewhere and call it when the user logs in, for example using awesome and the run_once function mentioned on the wiki. Any method will do, since it does not harm if the function is called more often than required.

#!/bin/sh

touch $HOME/.dbus/Xdbus
chmod 600 $HOME/.dbus/Xdbus
env | grep DBUS_SESSION_BUS_ADDRESS > $HOME/.dbus/Xdbus
echo 'export DBUS_SESSION_BUS_ADDRESS' >> $HOME/.dbus/Xdbus

exit 0

This creates a file containing the required Dbus evironment variable. Then in the script called by cron you import the variable by sourcing the script:

if [ -r "$HOME/.dbus/Xdbus" ]; then
  . "$HOME/.dbus/Xdbus"
fi