Bash Scripting Tutorial

Want to master Linux command-line automation? This Bash Scripting Tutorial walks you through everything—from writing your first script to debugging complex shell scripts. Whether you’re a complete beginner or a seasoned user looking to level up, this guide has something for everyone.

Table of Contents

• 1. Intro to Bash Scripting
• 2. Variables, Control Structures, and Arithmetic
• 3. Text Processing and Parameter Expansion
• 4. Advanced Bash Scripting

1. Intro to Bash Scripting

Bash scripting is an essential skill for anyone working with Linux or Unix. In this section, you’ll learn the core concepts:

• What is Bash?
• Bash documentation
• Script interpreter and permissions
• Time commands
• Variables
• Bash startup file
• Sourcing and aliasing
• Display text in bash with echo

2. Variables, Control Structures, and Arithmetic

This part of the Bash Scripting Tutorial focuses on flow control and arithmetic operations:

• Typeset command
• Declare command
• Read command
• While loop
• For loop
• Function
• File redirection
• File descriptors
• Case statement
• If-then-else statement
• Test command
• Arithmetic operators

3. Text Processing and Parameter Expansion

Shell scripting is powerful for manipulating text. In this module, you’ll explore:

• Bash filter and text manipulation
• Sed and Awk
• Positional Parameters

4. Advanced Bash Scripting

Ready to level up your skills? This section covers advanced scripting topics:

• Coprocesses
• Script debugging
• Signals and traps
• Bash eval and getopt commands