Summary: Find out how many about_ conceptual Help files exist on a Windows 8 Windows PowerShell installation.
How can I get a listing of all the about_ conceptual Help files on my computer running Windows 8?
Use the Get-Help cmdlet and search for about*, as shown here.
To find out how many articles this is, pipe the results to the Measure-Object cmdlet, as shown here.
Get-Help about* | Measure-Object