I too grew up with a "power on to basic" computer, in my case the ZX Spectrum. I don't think that people that did not have that experience at that age can truly get it. I was able to create graphics and play sounds with a very simple language. The text editor, the graphical display, the "OS", it was all the same thing. The manual taught you how to program in BASIC. It was an amazing tool of creativity and intellectual development. It was truly magical.
I know you mean well and I have nothing against bash, but I promise you it will not replicate that experience nor excite kids.