Command Line and Shell Scripting Bible -- About the Author -- Credits -- Contents at a Glance -- Contents -- Acknowledgments -- Introduction -- Who Should Read This Book -- How This Book Is Organized -- Minimum Requirements -- Where to Go from Here -- Part I: The Linux Command Line -- Chapter 1: Starting with Linux Shells -- What Is Linux? -- Linux Distributions -- Summary -- Chapter 2: Getting to the Shell -- Terminal Emulation -- The terminfo Database -- The Linux Console -- The xterm Terminal -- The Konsole Terminal -- The GNOME Terminal -- Summary -- Chapter 3: Basic bash Shell Commands -- Starting the Shell -- The Shell Prompt -- The bash Manual -- Filesystem Navigation -- File and Directory Listing -- File Handling -- Directory Handling -- Viewing File Contents -- Summary -- Chapter 4: More bash Shell Commands -- Monitoring Programs -- Monitoring Disk Space -- Working with Data Files -- Summary -- Chapter 5: Using Linux Environment Variables -- What Are Environment Variables? -- Setting Environment Variables -- Removing Environment Variables -- Default Shell Environment Variables -- Setting the PATH Environment Variable -- Locating System Environment Variables -- Variable Arrays -- Using Command Aliases -- Summary -- Chapter 6: Understanding Linux File Permissions -- Linux Security -- Using Linux Groups -- Decoding File Permissions -- Changing Security Settings -- Sharing Files -- Summary -- Chapter 7: Working with Editors -- The vim Editor -- The emacs Editor -- The KDE Family of Editors -- The GNOME Editor -- Summary -- Part II: Shell Scripting Basics -- Chapter 8: Basic Script Building -- Using Multiple Commands -- Creating a Script File -- Displaying Messages -- Using Variables -- Redirecting Input and Output -- Pipes -- Performing Math -- Exiting the Script -- Summary -- Chapter 9: Using Structured Commands.

Working with the if-then Statement -- The if-then-else Statement -- Nesting ifs -- The test Command -- Compound Condition Testing -- Advanced if-then Features -- The case Command -- Summary -- Chapter 10: More Structured Commands -- The for Command -- The C-Style for Command -- The while Command -- The until Command -- Nesting Loops -- Looping on File Data -- Controlling the Loop -- Processing the Output of a Loop -- Summary -- Chapter 11: Handling User Input -- Command Line Parameters -- Special Parameter Variables -- Being Shifty -- Working With Options -- Standardizing Options -- Getting User Input -- Summary -- Chapter 12: Presenting Data -- Understanding Input and Output -- Redirecting Output in Scripts -- Redirecting Input in Scripts -- Creating Your Own Redirection -- Listing Open File Descriptors -- Suppressing Command Output -- Using Temporary Files -- Logging Messages -- Summary -- Chapter 13: Script Control -- Handling Signals -- Running Scripts in Background Mode -- Running Scripts without a Console -- Job Control -- Being Nice -- Running Like Clockwork -- Start At the Beginning -- Summary -- Part III: Advanced Shell Scripting -- Chapter 14: Creating Functions -- Basic Script Functions -- Returning a Value -- Using Variables in Functions -- Array Variables and Functions -- Function Recursion -- Creating a Library -- Using Functions on the Command Line -- Summary -- Chapter 15: Adding Color to Scripts -- Creating Text Menus -- Adding Color -- Doing Windows -- Getting Graphic -- Summary -- Chapter 16: Introducing sed and gawk -- Text Manipulation -- The sed Editor Basics -- Summary -- Chapter 17: Regular Expressions -- What Are Regular Expressions? -- Defining BRE Patterns -- Extended Regular Expressions -- Regular Expressions in Action -- Summary -- Chapter 18: Advanced sed -- Multiline Commands -- The Hold Space -- Negating a Command.

Changing the Flow -- Pattern Replacement -- Using sed in Scripts -- Creating sed Utilities -- Summary -- Chapter 19: Advanced gawk -- Using Variables -- Working with Arrays -- Using Patterns -- Structured Commands -- Formatted Printing -- Built-in Functions -- User-Defined Functions -- Summary -- Part IV: Alternative Linux Shells -- Chapter 20: The ash Shell -- What Is the ash Shell? -- The Original ash Shell -- The dash Shell -- Scripting in dash -- Summary -- Chapter 21: The tcsh Shell -- What Is the tcsh Shell? -- The tcsh Shell Components -- Scripting in tcsh -- Summary -- Chapter 22: The Korn Shell -- The Korn Shell History -- The Parts of the ksh93 Shell -- Scripting in the ksh93 Shell -- Summary -- Chapter 23: The zsh Shell -- History of the zsh Shell -- Parts of the zsh Shell -- Scripting with zsh -- Summary -- Part V: Advanced Topics -- Chapter 24: Using a Database -- The MySQL Database -- The PostgreSQL Database -- Working with Tables -- Using the Database in Your Scripts -- Summary -- Chapter 25: Using the Web -- The Lynx Program -- The cURL Program -- Networking with zsh -- Summary -- Chapter 26: Using E-Mail -- The Basics of Linux E-Mail -- Setting Up Your Server -- Sending a Message with Mailx -- The Mutt Program -- Summary -- Chapter 27: Shell Scripts for Administrators -- Monitoring System Statistics -- Performing Backups -- Summary -- Appendix A: Quick Guide to bash Commands -- Built-In Commands -- Bash Commands -- Environment Variables -- Appendix B: Quick Guide to sed and gawk -- The sed Editor -- The gawk program -- Appendix C: Comparing Shells -- Variables -- Structured Commands -- Mathematical Operations -- Index.