What regex can I use to get the domain name from a url in Ruby?

Question

I am trying to construct a regex to extract a domain given a url.

for:

http://www.abc.google.com/
http://abc.google.com/
https://www.abc.google.com/
         


        

Answer 1

Don't know much about ruby but this regex pattern gives you the last 3 parts of the url excluding the trailing slash with a minumum of 2 characters per part.

([\w-]{2,}\.[\w-]{2,}\.[\w-]{2,})/$