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Classic Shell Scripting | 
 enlarge | Authors: Arnold Robbins, Nelson H.f. Beebe
Publisher: O'Reilly Media, Inc.
Category: Book
List Price: $34.95
Buy New: $19.45
You Save: $15.50 (44%)
New (39) Used (13) from $15.74
Avg. Customer Rating:  11 reviews
Sales Rank: 11773
Format: Illustrated
Media: Paperback
Edition: 1st
Number Of Items: 1
Pages: 558
Shipping Weight (lbs): 1.7
Dimensions (in): 9.1 x 7 x 1.2
ISBN: 0596005954
Dewey Decimal Number: 005.432
EAN: 9780596005955
ASIN: 0596005954
Publication Date: February 1, 2005
Availability: Usually ships in 1-2 business days
Shipping: International shipping available
Condition: Brand new item. Over 3.5 million customers served. Order now. Selling online since 1995. Order with confidence. Code: B20081119222050T
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| Editorial Reviews:
Product Description
Shell scripting skills never go out of style. It's the shell that unlocks the real potential of Unix. Shell scripting is essential for Unix users and system administrators-a way to quickly harness and customize the full power of any Unix system. With shell scripts, you can combine the fundamental Unix text and file processing commands to crunch data and automate repetitive tasks. But beneath this simple promise lies a treacherous ocean of variations in Unix commands and standards. "Classic Shell Scripting" is written to help you reliably navigate these tricky waters. Writing shell scripts requires more than just a knowledge of the shell language, it also requires familiarity with the individual Unix programs: why each one is there, how to use them by themselves, and in combination with the other programs. The authors are intimately familiar with the tips and tricks that can be used to create excellent scripts, as well as the traps that can make your best effort a bad shell script. With "Classic Shell Scripting" you'll avoid hours of wasted effort. You'll learn not only write useful shell scripts, but how to do it properly and portably. The ability to program and customize the shell quickly, reliably, and portably to get the best out of any individual system is an important skill for anyone operating and maintaining Unix or Linux systems. "Classic Shell Scripting" gives you everything you need to master these essential skills.
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| Customer Reviews: Read 6 more reviews...
 Excellent book to learn the basics March 12, 2007
1 out of 2 found this review helpful
I've scrolled through lots of books, there is so much information out there, but this book has a tendency to keep it simple and to the point. It has good illustrative examples that not only are useful but also serve as a good practice guide.
A good intro on Unix shell scripting and the problems it solves February 16, 2007
9 out of 11 found this review helpful
The purpose of this handy little book is to help someone who is working with Unix through the labyrinth of tools available and learn how and when to use them. It is important to note what is mentioned in the preface - "Throughout this book, we use the term Unix to mean not only commercial variants of the original Unix system, such as Solaris, Mac OS X, and HP-UX, but also the freely available workalike systems, such as GNU/Linux and the various BSD systems: BSD/OS, NetBSD, FreeBSD, and OpenBSD." I quote the book because the word "Unix" is about as descriptive as the word "car". The intended audience is anyone who is computer literate, already knows how to program, and is regularly faced with diverse problems in the workplace that must be solved with Unix tools. This book should give you a taste of which tool to turn to and when.
This book can be divided basically into two halves. The first half is a tutorial on writing Unix scripts. The book starts with a brief history of the Unix language and the philosophy behind Unix tools. Slowly, each chapter builds up your skill at script writing. You are shown how to differentiate between shells, how to work with text extensively, how to use loops, pipelines, variables, and decision statements, and how to work with files. There are detailed example scripts at every step along the way. By the end of chapter seven, you should know enough about basic shell scripting to be dangerous.
Starting in chapter 8, you are showed more application-related information. First, Chapter 8 shows and discusses some ready-made scripts for some tasks for which there is no out-of-the-box Unix solution. Some of the handy solutions shown are for path searching and automating software builds. Chapter 9 is a crash course on awk, and is aptly named. It is just enough to be dangerous. You learn how to solve common text processing problems with awk, but you'll need more resources to be really knowledgable. Chapter 10 explains the usage of common commands for listing files, modifying their timestamps, creating temporary files, finding files in a directory hierarchy, applying commands to a list of files, determining the amount of filesystem space used, and comparing files. Next there are two applied chapters showing you how to merge several databases and how to perform spellchecking by using scripting. Chapter 13 changes the subject a bit and talks about the concept of processes in Unix and how you can use their statistics to accomplish a number of monitoring and control tasks. Chapter 14 talks about problems you may run into if you try to take advantage of shell-language extensions, while Chapter 15 addresses the issue of writing secure scripts to the extent it is possible to do so. Writing man pages, and the basics of the Unix filesystem are the subjects of the last two chapters of the book.
I would say it is a good modern introduction to the subject of shell scripting and Unix tools and how to use them. It doesn't dive deeply into any particular topic, but it will get you started by broadly introducing you to the problems most Unix script writers and system admins face regularly and how to get started solving those problems. I highly recommend it for that purpose.
 Nice overview of Bourne/sh scripting November 16, 2006
4 out of 6 found this review helpful
This book provides a nice overview of the Bourne/sh shell's commands. I wish there were more examples with complete scripts. Korn shell users might want to consider "Korn Shell: Programs for Your Survival at Work" by Larry L. Smith. Bash users might want to consider "Bash Shell: Essential Programs for Your Survival at Work" by Larry L. Smith. Some of the examples in Randal K. Michael's "Mastering UNIX Shell Scripting" are also helpful.
Okay March 11, 2006
4 out of 22 found this review helpful
I would say this is a pretty good book that covers it's subject very well, buti didn't use it much because i had also bought Unix in a Nutshell, Fourth Edition, which covered the basics and differences between the shells briefly, which was all i needed at the time. but i looked through this and read some stuff that helped and it is a good book if you plan on doing extended shell scripting. it was just a little more than i actually needed
Practical and useful September 19, 2005
25 out of 25 found this review helpful
Great book. The emphasis is nicely split between actually using the shell itself and the whole supporting cast of unix tools (sed, awk, cut, join, sort etc.) The idea of carefully crafting solutions using the unix toolbox mindset is key. I also like the fact he doesn't try to teach to multiple shells, but first tries to emphasize portability by sticking mainly to a POSIX standard, and only later adds info about non standard shell topics. If I could only have one book on shell scripting, this would be it. The best description is 'Practical'.
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