Points of My Scenario:
1. I must ensure a specific domain local Active Directory group is added to the local Administrators group of many member servers.
2. I must not use Restricted Groups or any other group policy option to accomplish this task (for organization reasons).
3. I have a text file list of servers to work on.
4. I don't want to have to logon to each Windows server. I would like configure all servers from one logon session.
QUESTION: How can I add the domain local group to the local administrators group of specified member servers using the command line, PowerShell, or related script?