Basic Unix-like command line tutorial

The OP states this:

> Here are three 9-minute screencast videos that I recorded to introduce beginners to a Unix-like command-line interface. If you're running Mac OS or Linux, then you can access this interface by opening your Terminal program. If you're running Windows, then you need to first download and install Cygwin.

I'm hoping to teach Unix-like CLI scripting for a class next quarter...but will Cygwin really be close enough to OS X/Linux in capability and syntax? Or is it just easier to have students install a virtual machine?

Frankly, I would love to just stick to OS X. Piping things into the `say` command is a great way to demonstrate the power of lo-fi scripting (and piping) with seemingly futuristic programs.

Even though this seems very simple, it looks like a great article for getting up-to-speed if you're not already familiar with these things. For many of us, they took a while and a lot of research and trial-and-error and word-of-mouth before we knew the things this tutorial teaches. Thanks for posting it :)