Powershell NSLOOKUP

The following PowerShell one liners give you hostname to IP or vice versa.

Validate an IP address in PowerShell

Today I needed to validate an IP address after a user types it in to a script.  I don’t want to ping or check connectivity, I just want to validate that the format looks like a valid IP address.  I looked at various regex expressions which were getting complicated.  Then I stumbled upon this little nugget:

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