Pro Bash Programming: Scripting the Linux Shell

by Chris Johnson

Overview

The bash shell is a complete programming language, not merely a glue to combine external Linux commands. By taking full advantage of shell internals, shell programs can perform as snappily as utilities written in C or other compiled languages. And you will see how, without assuming Unix lore, you can write professional bash 4.0 programs through standard programming techniques.

• Complete bash coverage
• Teaches bash as a programming language
• Helps you master bash 4.0 features

Product Details

ISBN-13:	9781430219972
Publisher:	Apress
Publication date:	10/19/2009
Series:	Expert's Voice in Linux
Edition description:	1st ed.
Pages:	350
Product dimensions:	7.40(w) x 9.20(h) x 0.70(d)

About the Author

Chris F.A. Johnson was introduced to Unix in 1990 and learned shell scripting because there was no C compiler on the system. His first major project was a menu-driven, user-extensible database system with report generator. Chris uses the shell as his primary, general-purpose programming language, and his projects have included a member database, menuing system, and POP3 mail filtering and retrieval. Chris is the author of Shell Scripting Recipes: A Problem-Solution Approach (Apress, 2005). When not pushing shell scripting to the limit, he designs and codes web sites, teaches chess, and composes cryptic crosswords.

Table of Contents

• Hello, World! Your First Shell Program
• Input, Output, and Throughput
• Looping and Branching
• Command-Line Parsing and Expansion
• Parameters and Variables
• Shell Functions
• String Manipulation
• File Operations and Commands
• Reserved Words and Builtin Commands
• Writing Bug-Free Scripts and Debugging the Rest
• Programming for the Command Line
• Runtime Configuration
• Data Processing
• Scripting the Screen
• Entry-Level Programming