How to export DBUS_SESSION_BUS_ADDRESS
pid_gnome=$(pgrep gnome-session)DBUS_SESSION_BUS_ADDRESS=$(grep -z DBUS_SESSION_BUS_ADDRESS /proc/${pid_gnome}/environ|cut -d= -f2-)export DBUS_SESSION_BUS_ADDRESS=${DBUS_SESSION_BUS_ADDRESS}
Please make sure that the user has the DISPLAY variable set.
Another alternative is:
export $(dbus-launch)