Parsing elements such as e-mail addresses and URLs is a common task. Regular expressions make finding these patterns easy.
Parsing e-mail address and URLs from text
How to do it...
The regular expression pattern to match an e-mail address is as follows:
[A-Za-z0-9._]+@[A-Za-z0-9.]+\.[a-zA-Z]{2,4}
Consider the following example:
$ cat url_email.txt
this is a line of text contains,<email> #[email protected].
</email> and email address, blog "http://www.google.com",
[email protected] dfdfdfdddfdf;[email protected]<br />
<a href="http://code.google.com"><h1>Heading</h1>
As we are using extended regular expressions (+, for instance), we should use egrep:
$ egrep -o '[A...
