a phantom script to fetch pages

phantom_fetch.js

var fs = require('fs');
var system = require('system');
var url = system.args[1];

var page = require('webpage').create();
page.settings.userAgent = 'Baiduspider';

page.open(url, function () {
	try {
    fs.write(system.args[2], page.content, 'w');
    } catch(e) {
        console.log(e);
    }
    phantom.exit();
});