# File lib/vegas/runner.rb, line 157
    def check_for_running(path = nil)
      if File.exists?(pid_file) && File.exists?(url_file)
        running_url = File.read(url_file)
        if !port_open?(running_url)
          logger.warn "#{quoted_app_name} is already running at #{running_url}"
          launch!(running_url, path)
          exit!(1)
        end
      end
    end