从 URL 中清理并提取域名

Question

I am trying to extract and clean the domains from a list of URLs. I read the post
How to extract domain name from url?
So far I can do this

$ URI="http://user:pw@example.com:80/"
$ echo $URI | sed -e 's/[^/]*\/\/\([^@]*@\)\?\([^:/]*\).*/\2/'
example.com

But in my list of URLS there are also some cases like below

example1.comDNT:
example2.comContent-Length:

I want to have output as below

example1.com
example2.com

Can I use python to solve this
Any advice would be appreciated
Thanks alot

Answer 1

Could you try this:

echo $URI | awk -F'http://user:pw@' '{print $2}' | sed 's/\.com.*/.com/'