Bash Complete Tutorial

# 🐧 The Complete Bash Tutorial & Reference Guide > **A comprehensive, offline-friendly Bash reference** — covering everything from basic commands to advanced scripting, with real-world examples, tips, and use cases. --- ## 📑 Table of Contents 1. [Bash Introduction](#1-bash-introduction) 2. [Getting Started](#2-getting-started) 3. [Basic Commands](#3-basic-commands) 4. [Text Processing](#4-text-processing) 5. [System Monitoring](#5-system-monitoring) 6. [Networking](#6-networking) 7. [File Compression](#7-file-compression) 8. [File Permissions](#8-file-permissions) 9. [Scripting](#9-scripting) 10. [Exercises & Quiz](#10-exercises--quiz) --- # 1. Bash Introduction ## What is Bash? **Bash** (Bourne Again SHell) is a command-line interpreter and scripting language for Unix/Linux systems. It is the **default shell** on most Linux distributions and macOS (prior to Catalina, which switched to `zsh`). Bash lets you: - Run commands to interact with your operating system - Write scripts to automate repetitive tasks - Manage files, processes, and system configurations ## Why Learn Bash? | Reason | Description | |--------|-------------| | **Automation** | Automate backups, deployments, data pr