@sifo,

You might want to have this thread moved somewhere else? I mean, learning bash is not directly related to the N900. I don't know if this would better fit under Development.. although honestly, and meaning no disrespect, learning bash (or busybox or whatever) is a bit off-topic in the whole of talk.maemo.org.

Unless of course you direct your shell learning to something relevant to maemo and/or N900.

Cheers and good luck.