Learning the bash Shell 2nd Edition [Electronic resources] نسخه متنی

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Learning the bash Shell 2nd Edition [Electronic resources] - نسخه متنی

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Copyright

Preface

bash Versions

Summary of bash Features

Intended Audience

Code Examples

Chapter Summary

Conventions Used in This Handbook

We'd Like to Hear from You

Acknowledgments for the First Edition

Acknowledgments for the Second Edition

Chapter 1. bash Basics

What Is a Shell?

Scope of This Book

History of UNIX Shells

Getting bash

Interactive Shell Use

Files

Input and Output

Background Jobs

Special Characters and Quoting

Help

Chapter 2. Command-Line Editing

Enabling Command-Line Editing

The History File

emacs Editing Mode

vi Editing Mode

The fc Command

History Expansion

readline

Keyboard Habits

Chapter 3. Customizing Your Environment

The .bash_profile, .bash_logout, and .bashrc Files

Aliases

Options

Shell Variables

Customization and Subprocesses

Customization Hints

Chapter 4. Basic Shell Programming

Shell Scripts and Functions

Shell Variables

String Operators

Command Substitution

Advanced Examples: pushd and popd

Chapter 5. Flow Control

if/else

for

case

select

while and until

Chapter 6. Command-Line Options and Typed Variables

Command-Line Options

Typed Variables

Integer Variables and Arithmetic

Arrays

Chapter 7. Input/Output and Command-Line Processing

I/O Redirectors

String I/O

Command-Line Processing

Chapter 8. Process Handling

Process IDs and Job Numbers

Job Control

Signals

trap

Coroutines

Subshells

Process Substitution

Chapter 9. Debugging Shell Programs

Basic Debugging Aids

A bash Debugger

Chapter 10. bash Administration

Installing bash as the Standard Shell

Environment Customization

System Security Features

Chapter 11. bash for Your System

Obtaining bash

Unpacking the Archive

What's in the Archive

Who Do I Turn to?

Appendix A. Related Shells

The Bourne Shell

The IEEE 1003.2 POSIX Shell Standard

The Korn Shell

pdksh

Workalikes on PC Platforms

Appendix B. Reference Lists

Invocation

Built-In Commands and Reserved Words

Environment Variables

Test Operators

set Options

shopt Options

I/O Redirection

emacs Mode Commands

vi Control Mode Commands

Appendix C. Loadable Built-Ins

Appendix D. Syntax

Reserved Words

BNF for bash

Appendix E. Obtaining Sample Programs

FTP

FTPMAIL

Colophon

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