Book Image

Linux Command Line and Shell Scripting Bible - Third Edition

By : Richard Blum, Christine Bresnahan
Book Image

Linux Command Line and Shell Scripting Bible - Third Edition

By: Richard Blum, Christine Bresnahan

Overview of this book

The Linux command line enables you to type specific shell commands directly into the system to manipulate files and query system resources. Command line statements can be combined into short programs called shell scripts, a practice increasing in popularity due to its usefulness in automation. Linux is a robust system with tremendous potential, and Linux Command Line and Shell Scripting Bible opens the door to new possibilities. Linux Command Line and Shell Scripting Bible is your essential Linux guide. It contains new functional examples that are fully updated to align with the latest Linux features. Beginning with command line fundamentals, the book moves into shell scripting and shows you the practical application of commands in automating frequently performed functions. This book is a complete guide providing detailed instruction and expert advice working within this aspect of Linux. Whether used as a tutorial or as a quick reference, this book contains information that every Linux user should know.
Table of Contents (34 chapters)
2
Part I: The Linux Command Line
13
Part II: Shell Scripting Basics
20
Part III: Advanced Shell Scripting
28
Part IV: Creating Practical Scripts
32
End User License Agreement

Summary

This chapter walked through how to use some advanced features within your shell scripts. First, we discussed how to use the MySQL server to store persistent data for your applications. Just create a database and unique user account in MySQL for your application, and grant the user account privileges to only that database. You can then create tables to store the data that your application uses. The shell script uses the mysql command line tool to interface with the MySQL server, submit SELECT queries, and retrieve the results to display. Next we discussed how to use the lynx text-based browser to extract data from websites on the Internet. The lynx tool can dump all the text from a web page, and you can use standard shell programming skills to store that data and search it for the content you're looking for. Finally, we walked through how to use the standard Mailx program to send reports using the Linux e-mail server installed on your Linux system. The Mailx program allows...