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Linux Desk Reference (2nd Edition)

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I hope you get a lot of use out of this book. Since I first got started with Unix in 1986, I've spent a ton of cash buying reference books. I've always been a bibliophile, and computer books have the advantage of being tax deductible, so I've amassed quite a collection. It always annoys me when I get home and the glitzy, well-packaged, 400-page document-o-rama I just shelled out $50 for turns out to contain only 5 pages of actual information or, worse, to be full of information but so poorly organized that it's more trouble than it's worth to find what I need. I've got a shelf full of them, which I will sell cheap.

What I've tried to do here is incorporate the best features from my collection. I know what I like—a good index, thorough technical coverage, relevant examples, and concise explanations (in English). Also, in the process of writing this book I've become almost supernaturally attuned to the subject of computer reference books—you can whisper "Linux in a Nutshell" from 30 feet away across a crowded room and my ears will perk up like a retriever on point. The number one complaint I hear about reference books is "not enough examples." I'm not unsympathetic; thinking up, configuring, and testing all the examples for this book slowed the writing process down to a crawl. But, as my editor pointed out, I'm not doing this for my health. So you will find that for every command in this book there is an accompanying example.

To some extent, Linux commands tend to come in clusters. For example, there are a dozen or so that handle filesystems, another half dozen for fiddling with disks, a whole slew that do things with files, and so forth. Sometimes the command clusters follow a naming convention, as in the case of the "remote" commands (rlogin, rsh, etc.); other times they do not. It occurred to me that it wouldn't be entirely wrong to group the Linux commands into clusters (one for users, another for disks, etc.) and then treat the clusters as data structures. Technically, a data structure consists of two things:

·         a specification for how data will be stored

·         a specification of methods by which the data will be accessed

That's not a perfect description of how the chapters are arranged, but it isn't bad either. At the beginning of each chapter there is a high-level discussion of what purpose each "data structure" serves, how that service is accomplished, and the jargon that has sprung up around it. This provides background for the detailed description of commands that follows. Hopefully, this will provide enough information for newcomers to get started and perhaps be of some value for experienced users as well.

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