Change variables in start.sh file
Example: init.d.example
sudo nano /etc/init.d/mpc-hc-sync
sudo chmod +x /etc/init.d/mpc-hc-sync
sudo update-rc.d mpc-hc-sync defaults
start or stop service
sudo /etc/init.d/mpc-hc-sync start
sudo /etc/init.d/mpc-hc-sync stop