Get Domain from URL in Powershell

Question

I'm looking to strip out the domain in this scenario using PowerShell. What is the most effective method to get 'domain.com' out of the following variable?

$URL = "http://www.domain.com/folder/" 

(some sort of regex command here to convert/strip $URL into $DOMAIN using PowerShell)

$DOMAIN = "domain.com" #<-- taken from $URL 

I've searched and I've found results for finding the IP address from a domain but I need to establish what the domain is first using regex (or another method). Any suggestions are great.

Answer 1

Try the Uri class:

PS> [System.Uri]"http://www.domain.com/folder/"   AbsolutePath   : /folder/ AbsoluteUri    : http://www.domain.com/folder/ LocalPath      : /folder/ Authority      : www.domain.com HostNameType   : Dns IsDefaultPort  : True IsFile         : False IsLoopback     : False PathAndQuery   : /folder/ Segments       : {/, folder/} IsUnc          : False Host           : www.domain.com Port           : 80 Query          : Fragment       : Scheme         : http OriginalString : http://www.domain.com/folder/ DnsSafeHost    : www.domain.com IsAbsoluteUri  : True UserEscaped    : False UserInfo       : 

And remove the www prefix:

PS> ([System.Uri]"http://www.domain.com/folder/").Host -replace '^www\.' domain.com