Perl Regex to get the root domain of a URL

Question

How could I get some part of url?

For example:

http://www.facebook.com/xxxxxxxxxxx
http://www.stackoverflow.com/yyyyyyyyyyyyyyyy

I

Answer 1

This Might be helpful...

^https?:\/\/www\.([\da-zA-Z\.-]+)

Sample Input:

http://www.banglanews24.com/detailsnews.php
nssl=763daee77dc90b1c1baf0a361be2ff3c&nttl=20130416072403189462

http://www.prothom-alo.com/detail/date/2013-04-20/news/3463

http://www.facebook.com/xxxxxxxxxxx

http://www.stackoverflow.com/yyyyyyyyyyyyyyy

Sample output:

banglanews24.com

prothom-alo.com

facebook.com

stackoverflow.com