CurrantPi\NetworkData::prepareData PHP Method

    private function prepareData()
    {
        /*
         * There is a custom script alongside this project called 'uptime'
         * which figures out the amount of data going through the network
         * in the past second. This script takes one second to execute so
         * will delay the loading of the page accordingly.
         *
         * Also using one of the scripts in lib/string_helpers.php to
         * print the network speed in either b/s, Kb/s or Gb/s.
         */
        $output = shell_exec('sh ./lib/transfer_rate.sh');
        $rates = explode(' ', $output);
        // data object
        $data = new \stdClass();
        $data->down = StringHelpers::prettyBaud($rates[0]);
        $data->up = StringHelpers::prettyBaud($rates[1]);
        return $data;
    }