Linux useful day to day operational commands - Vijaigreen/Linux-quick-hand-guide GitHub Wiki

How to check an application is running or not on Linux machine

sudo service <service-name> status
or
sudo systemctl status <service-name>

How to stop a running application on Linux machine

sudo service <service-name> stop
or
sudo systemctl stop <service-name>

How to start an application on Linux machine

sudo service <service-name> start
or 
sudo systemctl start <service-name>

How to restart an application on Linux machine

sudo service <service-name> restart
or 
sudo systemctl restart <service-name>

How to start an application automatically during boot on Linux machine

sudo systemctl enable <service-name>

How to disable an application from automatically starting during boot on Linux machine

sudo systemctl disable <service-name>