Rating:  - Good index. Good CD-ROM
I own some of Ellie's books and I've taken courses from her in Silicon Valley. She writes clearly. My main objection to her books is that too many of the examples are a bit too simplistic. Too many examples use input provided by the user at the keyboard; in the business-world/corporate world, most input is obtained by reading in a file.
Rating:  - Great reference and how-to
I bought this book several years ago and it's safe to say that I've opened it up a minimum of once a week since then. Every single page has example code in it and content ranges from elementary to expert. gawk and sed are archaic programs with difficult to remember semantics and syntax. This book comes off the shelf every time I have to process text or files or the output of a program or any other repetitive task that is better suited for a CPU than for a human brain. The writing style is easy and pleasant without getting goofy. I highly recommend this book to anyone who uses a shell at least once a week.
Rating: - Don't think twice, just get it.
New to 'nix? You need to learn the shell to become comfortable and proficient with the OS. There is no better book for the serious beginner/intermediate self-motivated learner. Ellie Quigley is a superb instructor and writer.
Rating: - Excellent Book
I just started this book but have thumbed through all the chapters. The author is a very good writer and seems to be passionate about the subject unlike some of the authors that write dry tombs for O'Reilly. However, "Unix Power Tools", O'Reilly is not a dry tomb.
Anyway, better know your way around linux before you get this book even though it starts very basic. This is a huge book, 761 pages. Great info...
Rating: - This book will make your life easier
I found this book very easy to understand, but if you are looking for something more advance, this is not for you. The style of writing in this book is very easy to follow. Like what is written on the title, it has lots of examples, and an explanation always comes after the example. It is not only about shell, this book also has good basic knowledge and information about grep, sed, and awk. If you use Linux, and want to learn shell programming, get this book. I also found that the examples used in this book were very close to the real life problems we often meet in Linux.
The only reason that I rate only 4 stars for this book is because some similar part gets repeated too often in this book.
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