How to create linux service

a_start

The whole source of our daemon service is below. To use it for your own purposes do the following:

replace the name vsftpdg in the third line with your program name,
replace /usr/local/vsftpdg/pid with the folder where you’ll be running your program,
replace “nohup java -jar /usr/local/vsftpdg/vsftpdg_server.jar” with the path to your own program,
you’re good to go!

service.sh

#!/bin/sh
### BEGIN INIT INFO
# Provides:          vsftpdg
# Required-Start:    $local_fs $remote_fs $network $syslog
# Required-Stop:     $local_fs $remote_fs $network $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# X-Interactive:     true
# Short-Description: Start/stop vsftpdg server
### END INIT INFO
 
case $1 in
    start)
        echo "Starting vsftpdg ..."
        if [ ! -f /usr/local/vsftpdg/pid ]; then
            nohup java -jar /usr/local/vsftpdg/vsftpdg_server.jar /usr/local/vsftpdg 2>> /dev/null >> /dev/null &
            echo $! > /usr/local/vsftpdg/pid
            echo "Vsftpdg started ..."
        else
            echo "Vsftpdg is already running ..."
        fi
    ;;
    stop)
        if [ -f /usr/local/vsftpdg/pid ]; then
            PID=$(cat /usr/local/vsftpdg/pid);
            echo "Stopping vsftpdg ..."
            kill $PID;
            echo "Vsftpdg stopped ..."
            rm /usr/local/vsftpdg/pid
        else
            echo "Vsftpdg is not running ..."
        fi
    ;;
    restart)
        if [ -f /usr/local/vsftpdg/pid ]; then
            PID=$(cat /usr/local/vsftpdg/pid);
            echo "Stopping vsftpdg ...";
            kill $PID;
            echo "Vsftpdg stopped ...";
            rm /usr/local/vsftpdg/pid
 
            echo "Starting vsftpdg ..."
            nohup java -jar /usr/local/vsftpdg/vsftpdg_server.jar /usr/local/vsftpdg 2>> /dev/null >> /dev/null &
            echo $! > /usr/local/vsftpdg/pid
            echo "Vsftpdg started ..."
        else
            echo "Vsftpdg is not running ..."
        fi
    ;;
esac

x_end

Now save the file to “yourprogramname.sh” (for my purpose vsftpdg) and copy it to the daemon folder (run the code bellow).

sudo mv vsftpdg.sh /etc/init.d/vsftpdg
sudo chmod +x /etc/init.d/vsftpdg
sudo update-rc.d vsftpdg defaults
And that’s it, you’re finished, your Java daemon is now set to start everytime your turn your PC on. You can easily stop it by typing this in the terminal (replace vsftpdg with your own program):

sudo /etc/init.d/vsftpdg stop