MS Powershell is Microsoft's ripoff of Bash. I don't think this is a bad thing necessarily. Bash is a good tool and it's open source. If Windows bundled a sensible, full-fledged Bash and got rid of CMD.EXE I would dance for joy.

So Powershell lets you refer to your home directory as ~ and a bunch of commands have *nix aliases like ls and cat. This is nice for those who have *nix commands firmly internalized. You have to use .\foo.bat to run things in the current directory instead of just foo.bat, which I thought was cool.

But Powershell is not without its problems. For one thing I see this a lot:

The redirection operator '<' is not supported yet.

How hard is it to implement input redirection, really? For another thing, tab completion continues to be broken. When you hit Tab it still doesn't put a slash at the end of the text it inserts. You have to type a manual \ every time you hit Tab, to continue tabbing your way through directories. Thus doubling the number of keystrokes you're forced to type. This continues to drive me crazy. There's a small amount of evidence that someday it'll be fixed, but I'm not holding my breath.

You also usually can't bundle flags together. e.g. rm -rf would have to be rm -r -f in Powershell. This is just annoying enough to bother me, but I can look past it.

Sadly, Powershell also runs slower than a geriatric sea turtle. I don't understand what it's doing that takes 10-20 seconds to startup. Or why tab completion often lags for 5+ seconds itself.

My happiest surprise was when I tried to uninstall Powershell (so I could try version 2) and got this:

This dialog listed every program installed on my computer (in random order) including every Windows Update I'd ever installed. The worst part is that I couldn't even dismiss this dialog as an error. For all I know, uninstalling Powershell could cause every program on my computer to stop working. I've seen stranger things happen in Windows.

A person walking past my office when I saw this would have heard the crazed, maniacal, tortured laughter that only the experience of being forced to use Windows can elicit.