Learn BASH with Real Code Examples

Updated Nov 19, 2025

Introduction & Fundamentals Setup & Configuration Architecture & Deep Internals Performance & Security Development Workflow Learning & Career Growth Business & Strategy Examples

Installation Setup

Preinstalled on most Linux distros

Install via package manager (apt, yum, brew)

Verify with bash --version

Set as default shell using chsh

Use VS Code or terminal editors

Environment Setup

Install Bash or use system default

Configure .bashrc

Add aliases & functions

Install ShellCheck

Use VS Code terminal

Config Files

~/.bashrc

~/.bash_profile

~/.profile

config.env

cronjob files

Cli Commands

bash script.sh

chmod +x script.sh

export VAR=value

source file.sh

set -euo pipefail

Internationalization

UTF-8 supported

Locale control via LANG/LC_* variables

Process text in multiple languages

Accessibility

Readable syntax for simple scripts

Rich built-in help

Massive community examples

Easy debugging with set -x

Ui Styling

ANSI color codes

PS1 prompt customization

tmux + Bash UI enhancements

State Management

Variables as strings only

Local variables in functions

Environment variables

Traps for signal handling

Source external config files

Data Management

Strings & arrays

Text processing via grep/sed/awk

File manipulation

Streams & pipes

Temporary files