Linux® Command Line and Shell Scripting Bible -- Contents -- Introduction -- Part I: The Linux Command Line -- Chapter 1: Starting with Linux Shells -- What Is Linux? -- Looking into the Linux Kernel -- The GNU Utilities -- The Linux Desktop Environment -- Linux Distributions -- Core Linux Distributions -- Specialized Linux Distributions -- The Linux LiveCD -- Summary -- Chapter 2: Getting to the Shell -- Terminal Emulation -- Graphics Capabilities -- The Keyboard -- The terminfo Database -- The Linux Console -- The xterm Terminal -- Command Line Parameters -- The xterm Main Menu -- The VT Options Menu -- The VT Fonts Menu -- The Konsole Terminal -- Command Line Parameters -- Tabbed Window Sessions -- Profiles -- The Menu Bar -- The GNOME Terminal -- The Command Line Parameters -- Tabs -- The Menu Bar -- Summary -- Chapter 3: Basic bash Shell Commands -- Starting the Shell -- The Shell Prompt -- The Bash Manual -- Filesystem Navigation -- The Linux Filesystem -- Traversing Directories -- File and Directory Listing -- Basic Listing -- Modifying the Information Presented -- The Complete Parameter List -- Filtering Listing Output -- File Handling -- Creating Files -- Copying Files -- Linking Files -- Renaming Files -- Deleting Files -- Directory Handling -- Creating Directories -- Deleting Directories -- Viewing File Contents -- Viewing File Statistics -- Viewing the File Type -- Viewing the Whole File -- Viewing Parts of a File -- Summary -- Chapter 4: More bash Shell Commands -- Monitoring Programs -- Peeking at the Processes -- Real-Time Process Monitoring -- Stopping Processes -- Monitoring Disk Space -- Mounting Media -- Using the df Command -- Using the du Command -- Working with Data Files -- Sorting Data -- Searching for Data -- Compressing Data -- Archiving Data -- Summary -- Chapter 5: Using Linux Environment Variables.

What Are Environment Variables? -- Global Environment Variables -- Local Environment Variables -- Setting Environment Variables -- Setting Local Environment Variables -- Setting Global Environment Variables -- Removing Environment Variables -- Default Shell Environment Variables -- Setting the PATH Environment Variable -- Locating System Environment Variables -- Login Shell -- Interactive Shell -- Non-Interactive Shell -- Variable Arrays -- Using Command Aliases -- Summary -- Chapter 6: Understanding Linux File Permissions -- Linux Security -- The /etc/passwd File -- The /etc/shadow File -- Adding a New User -- Removing a User -- Modifying a User -- Using Linux Groups -- The /etc/group File -- Creating New Groups -- Modifying Groups -- Decoding File Permissions -- Using File Permission Symbols -- Default File Permissions -- Changing Security Settings -- Changing Permissions -- Changing Ownership -- Sharing Files -- Summary -- Chapter 7: Managing Filesystems -- Exploring Linux Filesystems -- The Basic Linux Filesystems -- Journaling Filesystems -- The Extended Linux Journaling Filesystems -- Working with Filesystems -- Creating Partitions -- Creating a Filesystem -- If Things Go Wrong -- Logical Volume Managers -- The Logical Volume Management Layout -- The LVM in Linux -- Using the Linux LVM -- Summary -- Chapter 8: Installing Software -- Package Management Primer -- The Debian-Based Systems -- Managing Packages with aptitude -- Installing Software Packages with aptitude -- Updating Software with aptitude -- Uninstalling Software with aptitude -- The aptitude Repositories -- The Red Hat-Based Systems -- Listing Installed Packages -- Installing Software with yum -- Updating Software with yum -- Uninstalling Software with yum -- Dealing with Broken Dependencies -- Yum Repositories -- Installing from Source Code -- Summary.

Chapter 9: Working with Editors -- The vim Editor -- The Basics of vim -- Editing Data -- Copy and Paste -- Search and Substitute -- The emacs Editor -- Using emacs on the Console -- Using emacs in X Windows -- The KDE Family of Editors -- The KWrite Editor -- The Kate Editor -- The GNOME Editor -- Starting gedit -- Basic gedit Features -- Setting Preferences -- Summary -- Part II: Shell Scripting Basics -- Chapter 10: Basic Script Building -- Using Multiple Commands -- Creating a Script File -- Displaying Messages -- Using Variables -- Environment Variables -- User Variables -- The Backtick -- Redirecting Input and Output -- Output Redirection -- Input Redirection -- Pipes -- Performing Math -- The expr Command -- Using Brackets -- A Floating-Point Solution -- Exiting the Script -- Checking the exit Status -- The exit Command -- Summary -- Chapter 11: Using Structured Commands -- Working with the if-then Statement -- The if-then-else Statement -- Nesting ifs -- The test Command -- Numeric Comparisons -- String Comparisons -- File Comparisons -- Compound Condition Testing -- Advanced if-then Features -- Using Double Parentheses -- Using Double Brackets -- The case Command -- Summary -- Chapter 12: More Structured Commands -- The for Command -- Reading Values in a List -- Reading Complex Values in a List -- Reading a List from a Variable -- Reading Values from a Command -- Changing the Field Separator -- Reading a Directory Using Wildcards -- The C-Style for Command -- The C Language for Command -- Using Multiple Variables -- The while Command -- Basic while Format -- Using Multiple Test Commands -- The until Command -- Nesting Loops -- Looping on File Data -- Controlling the Loop -- The break Command -- The continue Command -- Processing the Output of a Loop -- Summary -- Chapter 13: Handling User Input -- Command Line Parameters.

Reading Parameters -- Reading the Program Name -- Testing Parameters -- Special Parameter Variables -- Counting Parameters -- Grabbing All the Data -- Being Shifty -- Working with Options -- Finding Your Options -- Using the getopt Command -- The More Advanced getopts -- Standardizing Options -- Getting User Input -- Basic Reading -- Timing Out -- Silent Reading -- Reading from a File -- Summary -- Chapter 14: Presenting Data -- Understanding Input and Output -- Standard File Descriptors -- Redirecting Errors -- Redirecting Output in Scripts -- Temporary Redirections -- Permanent Redirections -- Redirecting Input in Scripts -- Creating Your Own Redirection -- Creating Output File Descriptors -- Redirecting File Descriptors -- Creating Input File Descriptors -- Creating a Read/Write File Descriptor -- Closing File Descriptors -- Listing Open File Descriptors -- Suppressing Command Output -- Using Temporary Files -- Creating a Local Temporary File -- Creating a Temporary File in /tmp -- Creating a Temporary Directory -- Logging Messages -- Summary -- Chapter 15: Script Control -- Handling Signals -- Linux Signals Revisited -- Generating Signals -- Trapping Signals -- Trapping a Script Exit -- Removing a Trap -- Running Scripts in Background Mode -- Running in the Background -- Running Multiple Background Jobs -- Exiting the Terminal -- Running Scripts Without a Console -- Job Control -- Viewing Jobs -- Restarting Stopped Jobs -- Being Nice -- The nice Command -- The renice Command -- Running Like Clockwork -- Scheduling a Job Using the at Command -- Scheduling Regular Scripts -- Start at the Beginning -- Starting Your Scripts at Boot Time -- Starting with a New Shell -- Summary -- PART III: Advanced Shell Scripting -- Chapter 16: Creating Functions -- Basic Script Functions -- Creating a Function -- Using Functions -- Returning a Value.

The Default Exit Status -- Using the return Command -- Using Function Output -- Using Variables in Functions -- Passing Parameters to a Function -- Handling Variables in a Function -- Array Variables and Functions -- Passing Arrays to Functions -- Returning Arrays from Functions -- Function Recursion -- Creating a Library -- Using Functions on the Command Line -- Creating Functions on the Command Line -- Defining Functions in the .bashrc File -- Summary -- Chapter 17: Writing Scripts for Graphical Desktops -- Creating Text Menus -- Create the Menu Layout -- Create the Menu Functions -- Add the Menu Logic -- Putting It All Together -- Using the select Command -- Doing Windows -- The dialog Package -- The dialog Options -- Using the dialog Command in a Script -- Getting Graphic -- The KDE Environment -- The GNOME Environment -- Summary -- Chapter 18: Introducing sed and gawk -- Text Manipulation -- The sed Editor -- The gawk Program -- The sed Editor Basics -- More Substitution Options -- Using Addresses -- Deleting Lines -- Inserting and Appending Text -- Changing Lines -- The transform Command -- Printing Revisited -- Using Files with sed -- Summary -- Chapter 19: Regular Expressions -- What Are Regular Expressions? -- A Definition -- Types of Regular Expressions -- Defining BRE Patterns -- Plain Text -- Special Characters -- Anchor Characters -- The Dot Character -- Character Classes -- Negating Character Classes -- Using Ranges -- Special Character Classes -- The Asterisk -- Extended Regular Expressions -- The Question Mark -- The Plus Sign -- Using Braces -- The Pipe Symbol -- Grouping Expressions -- Regular Expressions in Action -- Counting Directory Files -- Validating a Phone Number -- Parsing an E-mail Address -- Summary -- Chapter 20: Advanced sed -- Multiline Commands -- The next Command -- The Multiline delete Command.

The Multiline print Command.