Get current script path
script=$(readlink -f $0)
Check for root user
if [ "$(id -u)" -ne 0 ] ; then echo "current user is not root " exit 1fi
Read the configured Port
read -p "please set the app port for this instance [$_APP_PORT] " APP_PORTif ! echo $APP_PORT | egrep -q '^[0-9]+$' ; then echo "setted default port: $_APP_PORT" APP_PORT=$_APP_PORTfi