1. Introduction FREE CHAPTER

• Introduction
• Prerequisites to the Course
• Who Can Enroll in This Course?

2. Environment Setup to Practice with Bash Shell Scripting

• Environment Setup to Practice with Bash Shell Scripting
• Installing Any Linux Distribution And CentOS on Windows with WSL
• Enabling systemctl on WSL CentOS
• Configuring Gmail Setup on CentOS
• Accessing Windows Files from WSL Centos or WSL CentOS Files from Windows
• Basic Steps to Write and Execute a Bash Shell Script
• Different Ways to Execute a Shell Script
• How to Use CentOS Terminal on Visual Studio Code Editor
• chmod Command Won't Work by Default on WSL Linux
• Install Tools Such as Docker, Ansible, Java, nginx, and httpd with a Bash Script

3. Basic Understanding of Bash Shell Scripting

• Basic Understanding of Shell Script Execution
• Usage of Semicolon; in Bash Shell Scripts

4. Variables

• Introduction to Variable: What Is Variable and Define Variables with Differences
• Default Value of a Variable and How to Unset or Clear or Delete Variable Values
• Types of Variables
• Rules to Define Variables
• What Is a Syntax in Bash Shell Scripting

5. Inputs and Outputs

• Inputs and Outputs for Variables in Bash Shell Scripting
• Echo Command and Basic Usage of the Echo Command
• Practice with Variables and Echo Command
• Link Windows Path to Non-Root User Home of WSL OS
• Echo Command with Options Part-2
• How to Get the Colorful Output from Bash Shell Scripts
• Read Command
• Source Command to Read Inputs for Variables
• Export Command to Provide Inputs for Variables
• Command-Line Arguments to Provide Inputs for Variables of Bash Shell Script
• Shift Command with Command-Line Arguments

6. String Operations

• Basic Operations on String
• String Operations on Paths

7. Arrays

• Introduction to Arrays
• Accessing Array Elements and Operations on Arrays
• Why We Need Arrays
• How to Provide Inputs for Arrays

8. Bash Dictionaries | Bash Associative Arrays

• Introduction to Bash Dictionaries

9. Basics of Commands

• Exit Status of a Command
• Redirection Operators and STDIN, STDOUT, and STDERR
• How to Execute Any Command with the Help of a Variable?
• How to Use the Cut Command to Get Required Columns/Fields and Characters
• How to Use an awk Command to Get the Required Filed/Column or Line
• Basics of grep Command
• How to Use Variables in grep Command?
• Introduction to sed Command and Usage of Variables
• sed Command with Find and Replace | How to Use Different Delimiters in sed
• sed Command with Inserting and Deletion of Lines Using Line Numbers and Search
• Best Example to Use the tr Command with Cut and Then with kill-9
• Arithmetic Operations for Integers and Floating Point Numbers

10. Working with Command-Chaining Operators

• List of Command-Chaining Operators
• Command-Chaining Operator - Pipe
• Command-Chaining Operator - Semicolon
• Command-Chaining Operators - Logical AND and OR
• How to Find the Location or Path of Any Command or Installed Package
• Shell Script to Get the Location of Any Package
• Executing the Block of Code
• Simple Practice
• How to Get the Latest File or Directory from the Current Location

11. Test Command and Conditional Statements

• How to Use the Test Command to Validate a Condition
• Exit Command and Its Usage
• Introduction to If and If-Else Statements
• Debugging a Bash Shell Script

12. Shell Scripting Practice

• Write a Shell Script to Read a Given File Content
• Write a Shell Script to Install Packages Using Yum

13. The if, elif, elif else, and Case Statements

• The if, elif, and elif else Statements
• Case Statement
• Write a Shell Script to Find the Version for a Given Tool
• Shell Script to Send All DevOps Tools Information to Mail

14. Scheduling Jobs

• Scheduling Jobs with at Command
• Scheduling Jobs with crontab

15. Comments and Logging

• Comments and Logging

16. Functions

• Introduction to Functions
• Defining a Function and Calling It with and Without Arguments
• How to Pass Strings or Text as an Argument
• Shell Script to Install Packages with Functions
• Scope of Variables
• How to Reuse Function in Different Shell Scripts

17. Here Document and Here String

• Heredoc and Herestr

18. Loops

• Introduction to Bash Loops with an Example
• For Loop Syntax and Its Usage
• Working with Arrays Using For Loop
• Simple Practice with For Loops
• Send an Automatic Mail Alert When the Secret File Is Deleted
• Break and Continue Statements
• While Loop Part-1
• While Loop Part-2
• Until Loop with Example
• Select Loop and Its Usage with an Example
• Practice for You
• While Loop with getopts Command to Read Arguments

19. Working with REST APIs Using the Curl Command

• How to Validate the REST API Execution with the Curl Command?

20. Working with Remote Servers

• Introduction to Work with Remote Servers
• Shell Script to Execute a Command on Remote Hosts Using When They Used SSH Keys
• How to Provide Password for ssh with sshpass? | There Are Three Ways
• Working with SCP to Transfer a File from the Local Server to the Remote Server
• How to Provide a Password for ssh or scp Using Expect Command?

21. Real-Time Practice

• Monitor a Service(s) on the Host for Every Minute; If Not Running Then Send a Mail
• Shell Script to Monitor a Microservice with Its Health URL
• Monitor Application Log Directory | Alert If the Application Is Not Generating Logs
• Install the Required Git Version on the Host

22. Regular Expressions | Regex

• Introduction to Regular Expressions or Regex
• Creation of Pattern or Extended Regular Expressions or ERE
• Write a Shell Script to Get the Latest Git Version from the git-scm Website
• Case Statement with Regex

23. printf Command

• Concepts of printf Command