if /^on$|^off$/ !~ s[1]
          return send_data("CLIENT_ERROR argument 1: please input \"on\" or \"off\"\r\n")
        elsif s[1] == "on" && (s.length <= 3 || s[2].to_i < 1)
          return send_data("CLIENT_ERROR number of arguments (0 for 3) and <count> must be greater than zero\r\n")
        elsif s[1] == "off" && !(s.length == 2)