Bash Pocket Reference: Help for Power Users and Sys Admins

Description

Itâ??s simple: if you want to interact deeply with Mac OS X, Linux, and other Unix-like systems, you need to know how to work with the Bash shell. This concise little book puts all of the essential information about Bash right at your fingertips. Youâ??ll quickly find answers to the annoying questions that generally come up when youâ??re writing shell scripts: What characters do you need to quote? How do you get variable substitution to do exactly what you want? How do you use arrays? Updated for Bash version 4.4, this book has the answers to these and other problems in a format that makes browsing quick and easy. Topics include: Invoking the shell Syntax Functions and variables Arithmetic expressions Command history Programmable completion Job control Shell options Command execution Coprocesses Restricted shells Built-in commands Cover Copyright Table of Contents Chapter 1. The Bash Shell Conventions History Overview of Features Invoking the Shell Command-Line Options Arguments Command Exit Status Syntax Special Files Filename Metacharacters Brace Expansion Escape Sequences Quoting Command Forms Redirection Forms Functions Tip Variables Variable Assignment Variable Substitution Indirect Variables (namerefs) Built-In Shell Variables Other Shell Variables Arrays Special Prompt Strings Arithmetic Expressions Operators Notes Examples Command History Line-Edit Mode The fc Command C-Shell–Style History Programmable Completion Tip Examples Job Control Shell Options Command Execution Coprocesses Example Restricted Shells Tip Built-In Commands Resources Online Resources Books Acknowledgments Acknowledgments from the First Edition Index