Ever needed a new local administrator account for testing purposes? Provided you are already Administrator, and you opened a PowerShell with full Administrator privileges, adding such a user is a matter of just a couple of lines of code:
$user = 'splitpersonality' net user /add $user net localgroup Administrators /add $user
Note that the target group name is localized, so on non-US systems, you need to replace "Administrators" with the localized name of your Administrators group.
