NODE_ENV=myEnvironment pm2 start node/pathToApplication --name myApp

echo "Enabling autostartup..."
# Create startup file for pm2
sudo pm2 startup ubuntu -u myUser
# Save startup config
pm2 save
echo "Enabled autostartup"
#

pm2 flush

function run {
    ssh "$address" /bin/bash "$@"
}

run << SSHCONNECTION
    echo "Killing old running processes"
    pm2 stop node/pathToApplication
    pm2 kill

    echo "Starting server..."
    NODE_ENV=myEnvironment pm2 start pathToApplication --name appName
    echo "Server Started"
    # Enable autostartup

        # systemd is required for the autostartup
        sudo dpkg-query -W -f='${Status}' systemd 2>/dev/null | grep -c "ok installed" > /home/$user_q/systemd-check.txt
        systemdInstalled=$(cat /home/$user_q/systemd-check.txt)
        rm /home/$user_q/systemd-check.txt

        if [[ $systemdInstalled -eq 0 ]]; then
            echo "Systemd is not currently installed. Installing..."

            # install systemd
            sudo apt-get update
            sudo apt-get -y install systemd
            sudo rm /run/nologin

        else
            echo "systemd is already installed. Skipping this step."
        fi

    # Check of server started successfully, only then save the autostartup profile
    if [[ $(pm2 list | awk '{if ($10 == "online") print "OK"}') == "OK" ]]; then
        echo "Enabling autostartup..."
        # Create startup file for pm2
        sudo pm2 startup ubuntu -u myUser
        #Save startup config
        pm2 save
        echo "Enabled autostartup"
        #
    else
        echo "myApp has not started, cannot create autostartup."
    fi

    exit
SSHCONNECTION