Published at LXer:
Recently I was asked a very simple question that I'm pretty sure I've never addressed in this blog over the mass of posts already churned out. Shell scripting has been addressed, to a great degree, on this blog, but (even the beginner stuff) has included a presumption of certain knowledge. It's easy to forget what it was like back when I started working on Linux and Unix, so I often make the cardinal sin of assuming everyone has already asked this question and had it answered.
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