[juanre]

Those of you wanting to learn (or teach) these tools might find useful what I wrote to help my kids learn (sorry for the self-promotion, but I think it's relevant to the topic at hand). I tried to make it learn-by-doing and, most important, to help them figure out how to learn more by themselves. The basic shell is here,

http://juanreyero.com/ways-hackers/terminal.html

The following two chapters, also online in full, are about more Unix tools, and Emacs/Vi.