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.

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