Yes, the secret they would never tell you, it's actually just good old DOS ... see the screenshot below.
MS-DOS resident in high memory area! Haven't seen this one since I last wrote in Dos4GW.
Joking aside, Powershell an excellent and must have tool. Now you can have man-* and loads of command lets. Write your .NET code or WMI management code in it, as good as any *ix shell I've used if not better.
Here is a good step by step introduction to powershell by Dr Tobias Weltner (Powershell MVP) Mastering PowerShell in your Lunch Break -