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

Exploring the GNOME Editor

If you're working on a Linux system using the GNOME or Unity desktop environment, there's a graphical text editor that you can use as well. The gedit text editor is a basic text editor, with a few advanced features thrown in just for fun. This section walks you through the features of gedit and demonstrates how to use it for your shell script programming.

Starting gedit

Most GNOME desktop environments include gedit in the Accessories Panel menu item. For the Unity desktop environment, go to Dash ⇨ Search and type gedit. If you can't find gedit via the menu system, you can start it from the command line prompt in a GUI terminal emulator:

$ gedit factorial.sh myprog.c

When you start gedit with multiple files, it loads all the files into separate buffers and displays each one as a tabbed window within the main editor window, as shown in Figure 10.13.

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Figure 10.13 The gedit main editor window

The left frame in the gedit main editor window...