Send notification to all x users with notify-send

notify-send-all.sh

users=$(who | grep -iv pts | awk '{print $1}')

for user in $users
do
    echo $user
    pgrep "gnome-session" -u $user | while read -r line; do
        #exp=$(cat /proc/$line/environ | grep -z "^DBUS_SESSION_BUS_ADDRESS=")
        exp=$(grep -z DBUS_SESSION_BUS_ADDRESS /proc/$line/environ | tr '\0' '\n')
        echo export "$exp" > /tmp/exports.sh
        break
    done
    if [[ -f /tmp/exports.sh ]]; then
        source /tmp/exports.sh
	export DBUS_SESSION_BUS_ADDRESS
        export DISPLAY=$d
        su $user -c "/usr/bin/notify-send 'Hi!' 'test'"
	rm /tmp/exports.sh
    fi
done