var WpaClientSocket = require('wpa-client-socket');
var socket = new WpaClientSocket();
 
var ctrl_path = '/var/run/wpa_supplicant/wlan0';
 
socket.on('data', function(buf) {
  console.log(buf.toString());
});
 
socket.bind(ctrl_path);
socket.start();
 
var result = socket.write('SCAN');
 
if (result.toString() == 'OK\n')
  console.log('write success');