notify-send with crontab
Under Manjaro (Arch), I had to do this: Figure out the value of DBUS_SESSION_BUS_ADDRESS:Terminal:echo $DBUS_SESSION_BUS_ADDRESSresult: unix:path=/run/user/1000/busTerminal:crontab -ein crontabTerminal:sudo -u YOUR_USER DISPLAY=:0 DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1001/bus notify-send "Notification Title" "Notification body" ...