Recipe: Parsing e-mail address, URLs from text

egrep regex: [A-Za-z0-9.]+@[A-Za-z0-9.]+\.[a-zA-Z]{2,4}

Parsing e-mail addresses
======================
$ cat url_email.txt 
this is a line of text contains,<email> #slynux@slynux.com. </email> and email address, blog "http://www.google.com", test@yahoo.com dfdfdfdddfdf;cool.hacks@gmail.com<br /> 
<a href="http://code.google.com"> <h1> Headign </h1>


$ egrep -o '[A-Za-z0-9.]+@[A-Za-z0-9.]+\.[a-zA-Z]{2,4}'  url_email.txt
slynux@slynux.com 
test@yahoo.com 
cool.hacks@gmail.com



Parsing URL
===========

$ egrep -o "http://[a-zA-Z0-9.]+\.[a-zA-Z]{2,3}" url_email.txt
http://www.google.com 
http://code.google.com