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The world’s #1 shell programming book—now fully updated for Linux and more!
UNIX Shells by Example is the world’s #1 shell programming book, from the world’s #1 shell programming instructor: Ellie Quigley. In UNIX Shells by Example, Fourth Edition, Quigley has thoroughly updated her classic and delivers the information today’s shell programmers need most—including comprehensive coverage of Linux shell programming with bash!
Drawing on 20 years’ experience as a shell programming instructor, Quigley guides you through every facet of programming all leading UNIX/Linux shells: bourne, bash, korn, C, and tcsh. Quigley illuminates each concept with up-to-date, classroom-tested code examples designed to help you jump-start your own projects. She also systematically introduces awk, sed, and grep for both UNIX and GNU/Linux . . . making this the only shell programming book you’ll ever need!
New in this edition:
- Comprehensive coverage of Linux shell programming with bash
- Shell Programming QuickStart: makes first-time shell programmers productive in just 15 pages
- Complete, practical debugging chapter
- Updated coverage of the latest UNIX and GNU/Linux versions of awk, sed, and grep
- Shell programming for sysadmins: walks you through key UNIX and Linux system shell scripts
Completely updated:
- Shell programming fundamentals: what shells are, what they do, how they work
- Choosing the right shell for any application
Nearly 50,000 UNIX/Linux sysadmins, developers, and power users have used previous editions of UNIX Shells by Example to become expert shell programmers. With UNIX Shells by Example, Fourth Edition, you can, too—even if you’re completely new to shell programming. Then, once you’re an expert, you’ll turn to this book constantly as the best source for reliable answers, solutions, and code.
About the CD-ROM
Comprehensive shell programming code library: all source code and data files for this book’s hundreds of example programs.
- Sales Rank: #382147 in Books
- Published on: 2004-10-04
- Original language: English
- Number of items: 1
- Dimensions: 9.20" h x 1.60" w x 7.00" l, 3.70 pounds
- Binding: Paperback
- 1200 pages
Amazon.com Review
The second edition of Unix Shells by Examples shows off basic commands and utilities in the three most popular Unix shells--C, Bourne, and Korn--with side-by-side examples. The new edition of this book is sure to be a worthy reference for Unix programmers for getting around their favorite shell.
The best thing in this new edition is that the author presents short, effective examples of using basic commands and utilities for each of the three major Unix shells. This comparative approach means that you can use this book on different flavors of Unix and even migrate scripts between different shells. For each shell, the author provides fundamentals, like accessing profiles, command-line histories, and shell programming. "Lab sections" let you develop your skills with short, hands-on exercises for each shell. As in the earlier edition, the author's short examples show you how to perform basic tasks quickly with common switches and options.
Other sections here cover three major Unix utilities: grep (for searching), sed (for editing), and awk (for scripting and reporting). (The reference and tutorial on AWK programming is a notable feature here. There is also good coverage of regular expressions.)
Instead of hunting down information in countless man pages, this book will save you valuable time every day with its efficient format and comparative approach--truly useful features for the beginning and intermediate Unix user. --Richard Dragan
Topics covered: C, Bourne, and Korn Unix shells; grep, sed, and awk utilities; regular expressions; and shell programming.
From the Publisher
The best-selling Unix Shells by Example continues to be the only book you need to learn Unix shell programming. Unix Shells by Example, Third Edition adds thorough coverage of the new bash and tcsh shells to the full explanations in Quigley's famous treatment of the C, Bourne, and Korn shells and the awk, sed, and grep utilities, making this the most complete Unix shell programming book available anywhere.
Using proven techniques drawn from her acclaimed Silicon Valley Unix classes, Quigley transforms you into an expert-level shell programmer. You'll learn what the shells are, what they do, and how to program them, as well as how and when to use awk, sed, and grep. Code examples, completely revised and classroom-tested for this edition, explain concepts first-hand and can serve as the basis for your own projects.
From the Inside Flap
Preface Playing the "shell" game is a lot of fun. This book was written to make your learning experience both fun and profitable. Since the first edition was published, I have heard from many of you who have been helped by my book to realize that shell programming doesn't need to be difficult at all! Learning by example makes it easy and fun. In fact, due to such positive feedback, I have been asked by Prentice Hall to produce this new, updated version.
Writing UNIX Shells by Example is the culmination of 17 years of teaching and developing classes for the various shells and those UNIX utilities most heavily used by shell programmers. The course notes I developed for teaching classes have been used by the University of California Santa Cruz and University of California Davis UNIX programs, Sun Microsystems Education, Pyramid Education, DeAnza College, and numerous vendors throughout the world. Depending on the requirements of my client, I normally teach one shell at a time rather than all three. To accommodate the needs of so many clients, I developed separate materials for each of the respective UNIX shells and tools.
Whether I am teaching "grep, sed, and awk," "Bourne Shell for the System Administrator," or "The Interactive Korn Shell," one student always asks: "What book can I get that covers all three shells and the important utilities such as grep, sed, and awk? Should I get the awk book, or should I get a book on grep and sed? Is there one book that really covers it all? I don't want to buy three or four books in order to become a shell programmer."
In response, I can recommend a number of excellent books covering these topics separately, and some UNIX books that attempt to do it all, but the students want one book with everything and not just a quick survey. They want the UNIX tools, regular expressions, all three shells, quoting rules, a comparison of the three shells, exercises, and so forth, all in one book. This is that book. As I wrote it, I thought about how I teach the classes and organized the chapters in the same format. In the shell programming classes, the first topic is always an introduction to what the shell is and how it works. Then we talk about the UNIX utilities such as grep, sed, and awk, the most important tools in the shell programmer's toolbox. When learning about the shell, it is presented first as an interactive program where everything can be accomplished at the command line, and then as a programming language where the programming constructs are described and demonstrated in shell scripts. When shell programming classes are over, whether they last two days or a week or even a semester, the students are proficient and excited about writing scripts. They have learned how to play the shell game. This book will teach how to play the same game whether you take a class or just play by yourself.
Having always found that simple examples are easier for quick comprehension, each concept is captured in a small example followed by the output and an explanation of each line of the program. This method has proven to be very popular with those who learned Perl programming from my first book, Perl by Example, and UNIX Shells by Example now has been well-received for those who needed to write, read, and maintain shell programs.
The three shells are presented in parallel so that if, for example, you want to know how redirection is performed in one shell, there is a parallel discussion of that topic in each of the other shell chapters, and for quick comparison a chart in Appendix B of this book.
It is a nuisance to have to go to another book or the UNIX man page when all you want is enough information about a particular command to jog your memory on how the command works. To save you time, Appendix A contains a list of useful commands, their syntax and a definition. Examples and explanations are provided for the more robust and often-used commands.
The comparison chart in Appendix B will help you keep the different shells straight especially when you port scripts from one shell to another, and as a quick syntax check when all that you need is a reminder of how the construct works.
One of the biggest hurdles for shell programmers is using quotes properly. The section on quoting rules in Appendix C presents a step-by-step process for successful quoting in some of the most complex command lines. This procedure has dramatically reduced the amount of time programmers waste when debugging scripts with futile attempts at matching quotes properly.
I think you'll find this book a valuable tutorial and reference. The objective is to explain through example and keep things simple so that you have fun learning and save time. Since the book replicates what I say in my classes, I am confident that you will be a productive shell programmer in a short amount of time. Everything you need is right here at your fingertips. Playing the shell game is fun. You'll see!
Ellie Quigley (ellieq@ellieq)
Most helpful customer reviews
0 of 0 people found the following review helpful.
I feel pretty confident in bash
By Joe Lucas
I only knew introductory linux. I feel pretty confident in bash. Great problem sets. Unlike some textbooks, this one makes a concerted effort to explain each line of example code.
9 of 10 people found the following review helpful.
Outstanding Book. A must for learning shell programming.
By A Customer
Several of my fellow system engineers bought this book and they loved it. I purchased this book about three weeks ago and I have not put this book down! There are still several typos in the examples, but, like all programmers and engineers know, debugging is part of the job. In all honesty, fixing and tweaking the examples is actually fun. I strongly recommend creating the labs at the end of the chapter. These exercises will solidify your knowledge.
26 of 26 people found the following review helpful.
The best Unix Shell book I've ever read!
By Elizabeth Krumbach
If want to learn about shells and you learn by example, like I do, this book is essential.
The first 6 chapters (nearly 200 pages) goes over the basics of all shells; what they are, what they do, what programs are most used to manipulate data in them. There are whole chapters devoted to grep, sed and awk, and the author doesn't skimp on details. You will be a virtual grep/sed/awk guru by the time you learn everything in these chapters.
Chapters 7-15 introduce and get you into scripting of each major shell: Bourne shell, C and TC Shells, Korn shell, and Bash (bash is the standard shell in most linux distributions). It then spends a chapter on general debugging shell scripting problems.
The last chapters touch upon system administrating via the shell (rather than using gui tools). Again taught by example so it's very clear to the reader.
I learned more about bash (my shell of choice) from this guide than any other that I've read, and not for lack of trying, I've read several bash guides. I was happy to see that examples given were explained line-by-line so you don't lose track of what is happening in each example. I was delighted by the useful appendices covering useful commands and giving side by side shell comparisons.
This is my favorite shell book to date.
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