Question

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

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

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

$DOMAIN = "example.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).

Answer 1

Try the URI class:

PS> [System.Uri]"http://www.example.com/folder/"

AbsolutePath   : /folder/
AbsoluteUri    : http://www.example.com/folder/
LocalPath      : /folder/
Authority      : www.example.com
HostNameType   : Dns
IsDefaultPort  : True
IsFile         : False
IsLoopback     : False
PathAndQuery   : /folder/
Segments       : {/, folder/}
IsUnc          : False
Host           : www.example.com
Port           : 80
Query          :
Fragment       :
Scheme         : http
OriginalString : http://www.example.com/folder/
DnsSafeHost    : www.example.com
IsAbsoluteUri  : True
UserEscaped    : False
UserInfo       :

And remove the www prefix:

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