run-service-on-startup.sh

systemctl start service-name
systemctl status service-name
systenctl stop service-name
systemctl enable service-name
systemctl disable service-name
systemctl is-enabled service-name  //To check whether the service is currently configured to start on the next boot up
systemctl is-active service-name   //To check whether the service is active

How to remove Systemd services completely
systemctl stop service-name
Then disable the service

systemctl disable service-name
Removing the service in systemd

rm /etc/systemd/system/service-name
rm /etc/systemd/system/service-name/[related symlinks]
Reload systemd

systemctl daemon-reload
Finally run,

systemctl reset-failed


[FOR FURTHER READING PLEASE VISIT THIS URL: https://linoxide.com/linux-how-to/enable-disable-services-ubuntu-systemd-upstart/]