How to install

1. Ensure the script that you want to run at shutdown is executable:

chmod +x autoupdate.sh

2. Move file pre-shutdown.service to etc/systemd/system
3. Change exact directory in this .service file
4. Reload systemd, enable the service so it starts at boot time, then start it up:

sudo systemctl daemon-reload
sudo systemctl enable pre-shutdown.service
sudo systemctl start pre-shutdown.service

• Check everthing is ok:

sudo systemctl status pre-shutdown.service