Starting, stopping, and restarting Jenkins on Ubuntu

Jenkins by default starts running when installed. Here are the commands to start, stop, restart, and check the status of the Jenkins service:

1. To start Jenkins, use the following command:

        sudo systemctl start jenkins 

1. Similarly, to stop Jenkins, use the following command:

        sudo systemctl stop jenkins 

1. To restart Jenkins, use the following command:

        sudo systemctl restart jenkins 

1. To check the status of the Jenkins service, use the following systemctl command:

        sudo systemctl status jenkins 

1. You should see the following output:

        ● jenkins.service - LSB: Start Jenkins at boot time 
        Loaded: loaded (/etc/init.d/jenkins; bad; vendor preset: enabled) 
        Active: active (exited) since Wed 2017-07-19 22:34:39 UTC; 6min ago 
        Docs: man:systemd-sysv-generator(8)