Re: I would get it fired for inventing Powershell
I've never really used Windows for anything serious (my history is RSX->VMS->Linux, when not working on embedded systems) but I am impressed with Powershell for its ability to work with objects and collections as basic building blocks.
The ability to pipe around objects, instead of just character streams, along with primitives to allow constructs like "for each" and "case" switching based on class in a standardised way would be very useful improvements to bash.
Biting the hand that feeds IT
