Summary: Use Windows PowerShell to list top-level WMI namespaces.
How can I use Windows PowerShell to list the top-level WMI namespaces?
Use the Get-WmiObject cmdlet or the Get-CImInstance cmdlet and query for __NameSpace:
Windows PowerShell 2.0 syntax:
Get-WmiObject __NameSpace | select name
Windows PowerShell 3.0 syntax:
Get-CimInstance __NameSpace | select name