PhantomJS is an optimal solution for

1. Headless Website Testing

2. Screen Capture

3. Page Automation

4. Network Monitoring

Please check this link  http://phantomjs.org/

TO INSTALL PHANTOMJS

cd /usr/local/share wget https://phantomjs.googlecode.com/files/phantomjs-1.9.1-linux-x86_64.tar.bz2 tar xjvf phantomjs-1.9.1-linux-x86_64.tar.bz2 ln -s /usr/local/share/phantomjs-1.9.1-linux-x86_64/bin/phantomjs /usr/local/share/phantomjs ln -s /usr/local/share/phantomjs-1.9.1-linux-x86_64/bin/phantomjs /usr/local/bin/phantomjs ln -s /usr/local/share/phantomjs-1.9.1-linux-x86_64/bin/phantomjs /usr/bin/phantomjs

Additional package

apt-get install fontconfig

Then go to the location

root@machine# cd /usr/local/share/phantomjs-1.9.1-linux-x86_64/examples

root@machine# vim loadspeed.js

ADD OUR EDITED FILE TO GET THE LOAD PAGE SPEED

var args = require(‘system’).args;     if(args[1] === undefined){         console.log(‘you should provide an url’);         phantom.exit();     }

var namshiUrl = args[1];

var page = require(‘webpage’).create(),     system = require(‘system’),     t,address;

if (system.args.length === 1) {     console.log(‘Usage: loadspeed.js ‘+ namshiUrl);     phantom.exit(1); } else {     t = Date.now();     address = system.args[1];     page.open(address, function (status) {       if (status !== ‘success’) {             console.log(‘FAIL to load the address’);         } else {             t = Date.now() - t;             console.log(‘Page title is ' + page.evaluate(function () {                 return document.title;             }));             console.log(‘Loading time ' + t + ' msec’);         }         phantom.exit();     }); }

THEN TEST IT

root@vishnu-machine:~# for weburl in http://google.com http://yahoo.com ; do phantomjs /usr/local/share/phantomjs-1.9.1-linux-x86_64/examples/loadspeed.js ${weburl}; done

THEN INORDER TO DOING THIS WRITE A SCRIPT

#!/bin/bash true=0 for weburl in http://google.com http://yahoo.com http://hotmail.com ; do /usr/local/bin/phantomjs /usr/local/share/phantomjs-1.9.1-linux-x86_64/examples/loadspeed.js ${weburl}; done  > abc.txt cat abc.txt | awk ‘{print $3}’ | sed -n “2~2 p” > abc2.txt for i in cat abc2.txt do if [ $i -gt 12000 ] then     true=1 fi done if [ $true -eq 1 ] then    mail -s loadtime [email protected] < abc.txt fi