frederick@Frederick-PC:~$ sudo systemctl start my_program.service
frederick@Frederick-PC:~$ journalctl _SYSTEMD_UNIT=my_program.service
No journal files were found.
-- No entries --

[Unit]
Description=Start my_program client after system is booted

[Service]
Type=forking
ExecStart=/usr/bin/my_program.sh start
ExecStop=/usr/bin/my_program.sh stop
PIDFile=/run/my_program.pid
WorkingDirectory=/home/frederick/Applications/my_program-go/
StandardOutput=journal+console

[Install]
WantedBy=multi-user.target

#!/bin/sh

start() {
    if [ -f /run/my_program.pid ]; then
        kill -0 $(cat /run/my_program.pid) > /dev/null 2>&1
        if [ $? -eq 0 ]; then
            echo "my_program has been already started"
            exit 1
        fi
    fi
    echo -n "Starting my_program... "
    nohup /home/frederick/Applications/my_program-go/my_program-local -c /home/frederick/Applications/my_program-go/config.json >> /home/frederick/Applications/my_program-go/my_program.log 2>&1 &
    if [ $? -gt 0 ]; then
        echo "failed"
        rm /run/my_program.pid > /dev/null 2>&1
    else
        echo $! | tee /run/my_program.pid
    fi
}

stop() {
    if [ -f /run/my_program.pid ]; then
        echo -n "Stopping my_program... "
        msg=$(kill $(cat /run/my_program.pid) 2>&1)
        if [ $? -gt 0 ]; then
            echo "failed"
            echo $msg
        else
            rm /run/my_program.pid > /dev/null 2>&1
            echo "succeeded"
        fi
    else
        echo "my_program not started"
    fi
}

restart() {
    stop
    start
}

case $1 in
    start|stop|restart)
        "$1"
        ;;
    *)
        echo "No such operation"
        exit 1
        ;;
esac