Overview

This Nutshell Handbook® is a thorough introduction to the Korn shell, both as a user interface and as a programming language.The Korn shell, like the C and Bourne shells, is a program that interprets UNIX commands. It has many features that aren't found in other shells, including command history (the ability to recall and edit previous commands). The Korn shell is also faster; several of its features allow you to write programs that execute more quickly than their Bourne or C shell equivalents.This book provides ...

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Learning the Korn Shell

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Overview

This Nutshell Handbook® is a thorough introduction to the Korn shell, both as a user interface and as a programming language.The Korn shell, like the C and Bourne shells, is a program that interprets UNIX commands. It has many features that aren't found in other shells, including command history (the ability to recall and edit previous commands). The Korn shell is also faster; several of its features allow you to write programs that execute more quickly than their Bourne or C shell equivalents.This book provides a clear and concise explanation of the Korn shell's features. It explains ksh string operations, co-processes, signals and signal handling, and one of the worst "dark corners" of shell programming: command-line interpretation. It does this by introducing simple real-life examples and then adding options and complexity in later chapters, illustrating the way real-world script development generally proceeds. An additional (and unique) programming aid, a Korn shell debugger (kshdb), is also included.Learning the Korn Shell is an ideal resource for many UNIX users and programmers, including software developers who want to "prototype" their designs, system administrators who want to write tools for their own use, and even novices who just want to use some of ksh's more advanced interactive features.


Presents the Korn shell for users a step above the beginner level. You learn how to use the shell interactively, and you also learn how to program in the shell to be able to write efficient scripts. An appendix provides information on other shells. Shell script programming is demonstrated via a practical example from a script debugger.

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Editorial Reviews

Booknews
A thorough introduction to UNIX's newest and most powerful command interpreter, which combines the best features of the older Bourne and C shells, in addition to providing many new features of its own. The volume provides a guide to all aspects of Korn shell usage: interactive "command line" use, plus coverage of shell programming. Annotation c. Book News, Inc., Portland, OR (booknews.com)
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Product Details

  • ISBN-13: 9781449360948
  • Publisher: O'Reilly Media, Incorporated
  • Publication date: 1/1/1993
  • Series: Nutshell Handbooks
  • Sold by: Barnes & Noble
  • Format: eBook
  • Edition number: 1
  • Pages: 360
  • File size: 6 MB

Meet the Author

Bill Rosenblatt is president of GiantSteps/Media Technology Strategies, a consulting firm in New York City. Before founding GiantSteps, Bill was CTO of Fathom, an online content and education company associated with Columbia University and other scholarly institutions. He has been a technology executive at McGraw-Hill and Times Mirror, and head of strategic marketing for media and publishing at Sun Microsystems. Bill was also one of the architects of the Digital Object Identifier (DOI), a standard for online content identification and DRM.

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Table of Contents

Preface
1 Korn Shell Basics 1
2 Command-Line Editing 33
3 Customizing Your Environment 65
4 Basic Shell Programming 91
5 Flow Control 135
6 Command-Line Options and Typed Variables 172
7 Input/Output and Command-Line Processing 209
8 Process Handling 257
9 Debugging Shell Programs 290
10 Korn Shell Administration 321
A Related Shells 337
B Reference Information 366
C Building ksh from Source Code 386
D AT&T ast Source Code License Agreement 390
Index 397
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