Gain insights into the intricacies of the Bash shell, ideal for beginners. Delve into essential skills with interactive learning designed to ensure lasting knowledge without requiring prior experience.

dockerbash.tar.gz

tset

A course for anyone interested in understanding all aspects of the bash shell. Designed for use by beginners, it assumes as little knowledge as possible but teaches you all the intricacies of bash it took me decades to learn by trial and error. 

The interactive nature of the course instills the knowledge in a way you will not forget!

Master the Bash Shell

### How Important is this Lesson? 

Most bash scripts won't be completely comprehensible or safely written unless
**exit codes** are understood.

### What Is An Exit Code?

After you run a command, function or builtin, a special variable is set that
tells you what the result of that command was. If you’re familiar with HTTP
codes like 200 or 404, this is a similar concept to that.

To take a simple example, type this in:

# How Important is this Lesson? 

Most bash scripts won't be completely comprehensible or safely written unless
**exit codes** are understood.

# What Is An Exit Code?

After you run a command, function or builtin, a special variable is set that
tells you what the result of that command was. If you’re familiar with HTTP
codes like 200 or 404, this is a similar concept to that.

To take a simple example, type this in:

In this lesson, you will find out what an exit code is, how you can set one in a script and a function, some conventions around exit codes, and other 'special' parameters in bash.

Core Bash

Scripting Bash

Bash in Practice

Advanced Bash

Exit Codes

How Important is this Lesson?

What Is An Exit Code?