Bash Scripting Fundamentals

Bash Scripting Fundamentals

English | 2016 | MP4 | AVC 1280×720 | AAC 44KHz 2ch | 4h 42m | 1.61 GB

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

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

What You Will Learn

  • Bash scripting fundamentals
  • Real-world scripting examples

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.

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.

Table of Contents

0 Bash Scripting Fundamentals – Introduction

Creating Your First Shell Script
1.0 Learning objectives
1.1 Why Scripting in Bash Makes Sense
1.2 Choosing an Editor
1.3 Core Bash Script Ingredients
1.4 Storing and Running the Script
1.5 Using Bash Internal Commands versus External Commands
1.6 Finding Help About Scripting Components
1.7 Exercise 1
1.8 Exercise 1 Solution

Working with Variables and Parameters
2.0 Learning objectives
2.1 About Terminology
2.2 Using and Defining Variables
2.3 Defining Variables with the read Command
2.4 Understanding Variables and Subshells
2.5 Sourcing
2.6 Quoting
2.7 Handling Script Arguments
2.8 Understanding the Need to Use Shift
2.9 Using Command Substitution
2.10 String Verification
2.11 Using Here Documents
2.12 Exercise 2
2.13 Exercise 2 Solution

Transforming Input
3.0 Learning objectives
3.1 Working with Substitution Operators
3.3 Understanding Regular Expressions
3.4 Calculating
3.5 Exercise 3
3.6 Exercise 3 Solution

Using Essential External Tools
4.0 Learning objectives
4.1 Using grep
4.2 Using test
4.3 Using cut and sort
4.4 Using tail and head
4.5 Using sed
4.6 Using awk
4.7 Using tr
4.8 Exercise 4
4.9 Exercise 4 Solution

Using Conditional Statements
5.0 Learning objectives
5.1 Using if then fi
5.2 Using && and
5.3 Using for
5.4 Using case
5.5 Using while and until
5.6 Exercise 5
5.7 Exercise 5 Solution

Using Advanced Scripting Options
6.0 Learning objectives
6.1 Working with Options
6.2 Using Functions
6.3 Working with Arrays
6.4 Defining Menu Interfaces
6.5 Using trap
6.6 Exercise 6
6.7 Exercise 6 Solution

Script Debugging and Analyzing
7.0 Learning objectives
7.1 Design Considerations
7.2 Common Analyzing Tools
7.3 Using bash -x
7.4 Exercise 7
7.5 Exercise 7 Solution

Scripting by Example
8.0 Learning objectives
8.1 Monitoring CPU Utilization Part 1
8.2 Monitoring CPU Utilization Part 2
8.3 Practicing Calculation
8.4 Reading an init Script
8.5 Using a Countdown Script
8.6 Efficient if then fi
8.7 Simple Process Monitoring

9 Bash Scripting Fundamentals – Summary