gOmp

#!/usr/bin/env node

var fs=require('fs');

fs.readdir('/sys/class/net',function(){

        var Tx_Bytes=fs.readFileSync('/sys/class/net/bridge0/statistics/tx_bytes');
        var Rx_Bytes=fs.readFileSync('/sys/class/net/bridge0/statistics/rx_bytes');

        console.log('/sys/class/net/bridge0/statistics/\n');

gOmp

var sudo        = require('sudo'),
    pcap_parser = require('pcap-parser'),
    Parser 		= require('binary-parser').Parser;

// capture using tcpdump
tcpdump = sudo(['tcpdump', '-c', '1', '-w', '-', '-U', '-i', 'bridge0', 'tcp port 80']);
tcpdump.on('close', function () {
  console.log('tcpdump complete.');
});