Shell Scripting Recipes is filled with over 150 much-needed and practical recipes that follow a problem-solution format, and help all Unix users regain some of the lost time spent creating and testing shell scripts. Most scripts in this book are POSIX (Portable Operating System Interface)-compliant, so they are supported by many of the major shell variants, including Bash, ksh, and sh, among others. This completely updated second edition takes into account the many changes to shell scripting that have occurred since its original publication nearly ten years ago, and all the recipes are now relevant for a modern audience.
Each real-world example recipe follows the same structure and easily shows you what's going on in each case. File conversion (DOS, UNIX, and Mac), system administration, and resource monitoring are just a few of the topics covered in this highly practical shell scripting reference. You will also find recipes for filename management, complex date calculations, screen control capabilities, and more.
Author Chris Johnson's code is clear, direct, and applicable, and he explains everything well in each recipe so that you understand not just how to do something, but why to do it that way. Shell Scripting Recipes is an invaluable book and one to add to your library today.
What youll learn
How to effectively use the POSIX shell and command-line utilities
How to use strings, numbers, words, and filenames with ease
Effective file management and file conversion (DOS, UNIX, and Mac)
How to monitor resources effectively
How to perform complex date calculations
Manage a POP3 email server
Who this book is for
This book is for anyone who has the basic knowledge of what shell scripting is and wants to learn how to use it properly. Each recipes is explained clearly and the book begins with the simplest recipes, so all you need is a basic knowledge of what shell scripting is.
Table of Contents
1: The POSIX Shell and Command-Line Utilities
2: Playing with Files: Viewing, Manipulating, and Editing Text Files
3: String Briefs
4: What's in a Word?
5: Scripting by Numbers
6: Loose Names Sink Scripts: Bringing Sanity to Filenames
7: Treading a Righteous PATH
8: The Dating Game
9: Good Housekeeping: Monitoring and Tidying Up File Systems
10: Screenplay: The screen-funcs Library
11: Aging, Archiving, and Deleting Files
12: Covering All Your Databases
13: Home on the Web
14:Taking Care of Business
15: Random Acts of Scripting
16: A Smorgasbord of Scripts
17: Script Development Management
Appendix: Internet Scripting Resources