Bash Scripting Fundamentals

Bash Scripting Fundamentals

by Sander van Vugt
Released April 2016
Publisher(s): Prentice Hall
ISBN: 0134541731

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Video description

4+ Hours of Video Instruction

More than 4 hours of video instruction that help you learn everything you need to know to write and read Bash shell scripts

Description

Bash Scripting LiveLessons teaches shell scripting to novice as well as experienced Linux administrators and users. This course consists of 8 lessons in which all concepts that are relevant to bash shell scripting are explained. Each lesson contains many practical examples to show how scripting solutions are being used in the real world. Each lesson concludes with an exercise, followed by an exercise explanation that makes this course an ideal solution for learning to program the bash shell.

The video lessons cover the following topics:

  • Creating your first shell script
  • Working with variables and parameters
  • Transforming input
  • Using essential external tools
  • Using conditional statements
  • Using advanced scripting options
  • Script debugging and analyzing
  • Scripting by example

About the Instructor

Sander van Vugt is an independent Linux trainer, author, and consultant living in the Netherlands. Sander has written numerous books about different Linux-related topics and many articles for Linux publications around the world. Sander has been teaching Red Hat, Ubuntu, SUSE, and LPI Linux classes since 1994. As a consultant, he specializes in Linux High Availability solutions and Performance Optimization. More information about Sander is on his website at www.sandervanvugt.com.

Skill Level

  • Beginning to intermediate

What You Will Learn

  • Bash scripting fundamentals
  • Real-world scripting examples

Who Should Take This Course

The target audience for this course consists of Linux users and professionals that want to automate tasks on Linux using Bash shell scripts. A secondary target audience consists of IT users and professionals that want to get experience with simple programming languages.

Table of Contents

Lesson 1: Creating Your First Shell Script

In this lesson, you learn the first steps to writing shell scripts; you will also explore the basic components that should be available in all shell scripts.

Lesson 2: Working with Variables and Parameters

In this lesson, you learn how to work with dynamic data in a script using variables and parameters, which can modify the behavior of any script.

Lesson 3: Transforming Input

This lesson explains how to transform input using different advanced techniques, such as pattern matching and command substitution, which help when you are working on the exact data that you need in your script.

Lesson 4: Using Essential External Tools

Bash shell scripts really become flexible by using external tools. This lesson explains the essential external tools available and how to integrate them in a shell script.

Lesson 5: Using Conditional Statements

To make bash scripts really flexible, you can use conditional statements. These include looping and iteration statements such as if then ...fiand case and to see how your script reacts differently with different conditions.

Lesson 6: Using Advanced Scripting Options

In this lesson, you learn how to work with menus, arrays, options and other advanced scripting possibilities, so you can develop scripts that can be used when the environment where they are used poses different needs.

Lesson 7: Script Debugging and Analyzing

In case the script doesn't do what it's supposed to do, you need to find out what's happening. In this lesson, you learn about script debugging and analyzing. This lesson covers the best techniques that are going to help you to find the error in an efficient way.

Lesson 8: Scripting By Example

This lesson walks you through some advanced scripts that are used in real production environments to reach specific results. By looking at these scripts you'll learn how the techniques you've learned about in this course are used in real-life production environments.

About LiveLessons Video Training

LiveLessons Video Training series publishes hundreds of hands-on, expert-led video tutorials covering a wide selection of technology topics designed to teach you the skills you need to succeed. This professional and personal technology video series features world-leading author instructors published by your trusted technology brands: Addison-Wesley, Cisco Press, IBM Press, Pearson IT Certification, Prentice Hall, Sams, and Que. Topics include IT Certification, Programming, Web Development, Mobile Development, Home and Office Technologies, Business and Management, and more.

View all LiveLessons on InformIT at http://www.informit.com/livelessons.

Table of contents

  1. Introduction
    1. Bash Scripting Fundamentals: Introduction
  2. Lesson 1: Creating Your First Shell Script
    1. Learning objectives
    2. 1.1 Why Scripting in Bash Makes Sense
    3. 1.2 Choosing an Editor
    4. 1.3 Core Bash Script Ingredients
    5. 1.4 Storing and Running the Script
    6. 1.5 Using Bash Internal Commands versus External Commands
    7. 1.6 Finding Help About Scripting Components
    8. Exercise 1
    9. Exercise 1 Solution
  3. Lesson 2: Working with Variables and Parameters
    1. Learning objectives
    2. 2.1 About Terminology
    3. 2.2 Using and Defining Variables
    4. 2.3 Defining Variables with the read Command
    5. 2.4 Understanding Variables and Subshells
    6. 2.5 Sourcing
    7. 2.6 Quoting
    8. 2.7 Handling Script Arguments
    9. 2.8 Understanding the Need to Use Shift
    10. 2.9 Using Command Substitution
    11. 2.10 String Verification
    12. 2.11 Using Here Documents
    13. Exercise 2
    14. Exercise 2 Solution
  4. Lesson 3: Transforming Input
    1. Learning objectives
    2. 3.1 Working with Substitution Operators
    3. 3.2 Using Pattern Matching Operators
    4. 3.3 Understanding Regular Expressions
    5. 3.4 Calculating
    6. Exercise 3
    7. Exercise 3 Solution
  5. Lesson 4: Using Essential External Tools
    1. Learning objectives
    2. 4.1 Using grep
    3. 4.2 Using test
    4. 4.3 Using cut and sort
    5. 4.4 Using tail and head
    6. 4.5 Using sed
    7. 4.6 Using awk
    8. 4.7 Using tr
    9. Exercise 4
    10. Exercise 4 Solution
  6. Lesson 5: Using Conditional Statements
    1. Learning objectives
    2. 5.1 Using if then fi
    3. 5.2 Using and ||
    4. 5.3 Using for
    5. 5.4 Using case
    6. 5.5 Using while and until
    7. Exercise 5
    8. Exercise 5 Solution
  7. Lesson 6: Using Advanced Scripting Options
    1. Learning objectives
    2. 6.1 Working with Options
    3. 6.2 Using Functions
    4. 6.3 Working with Arrays
    5. 6.4 Defining Menu Interfaces
    6. 6.5 Using trap
    7. Exercise 6
    8. Exercise 6 Solution
  8. Lesson 7: Script Debugging and Analyzing
    1. Learning objectives
    2. 7.1 Design Considerations
    3. 7.2 Common Analyzing Tools
    4. 7.3 Using bash -x
    5. Exercise 7
    6. Exercise 7 Solution
  9. Lesson 8: Scripting by Example
    1. Learning objectives
    2. 8.1 Monitoring CPU Utilization Part 1
    3. 8.2 Monitoring CPU Utilization Part 2
    4. 8.3 Practicing Calculation
    5. 8.4 Reading an init Script
    6. 8.5 Using a Countdown Script
    7. 8.6 Efficient if then fi
    8. 8.7 Simple Process Monitoring
  10. Summary
    1. Bash Scripting Fundamentals: Summary

Product information

  • Title: Bash Scripting Fundamentals
  • Author(s): Sander van Vugt
  • Release date: April 2016
  • Publisher(s): Prentice Hall
  • ISBN: 0134541731