Jason Cannon's book shows that, indeed, it is possible to have you create a book as good, and sometimes better, than those that have editors and publishers galore, for example Schott's "The Linux Command Line", and Blum's "Linux Command Line and Shell Scripting". While I recommend all three books if you need to be die-hard Linux wizard, what especially recommends Cannon's book is that he takes the time to explain what other books simply find too easy to explain (for example, umask and chmod). In addition, Cannon revels in pearls and shortcuts, and giving away his polished command line sequences that are both remarkably intuitive once you know them, and totally elusive until somebody tells you. In addition, Cannon takes the time to explain SSH and connecting --yes, perhaps a bit too dense if starting to learn Unix, and a bit unnecessary for the expert, but still certainly very, very practical. It is not uncommon to find the Linux newbie ready to go, with basic commands under his belt learned and memorized, just to be stumped at time of logging. Cannon's SSH initial chapters are a fresh blast of air, and gives folks confidence with Linux, as opposed to becoming totally stumped at first.
That is, of course, not to say that at times the book feels slightly rushed. Command Line Kung Fu, for example, worth the price on its own, would be made into a serious reference with an expansion on other frequent command options, and examples. Overall, this book offers the newbie something rarely offered: the ability to learn Linux, and begin using pearls and exotic but useful command sequences that are usually reserved for those 'in the know' with many years of experience. Get a few of these command sequences under your belt, and you will impress even the most die-hard Linux guru.
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