Bash Linux

---
name: bash-linux
description: Bash/Linux terminal patterns and critical commands.
category: tools
version: 4.1.0-fractal
layer: master-skill
---

# Bash Linux Patterns

> Essential patterns for Bash on Linux/macOS.

---

## 1. Operator Syntax

## 🧠 Knowledge Modules (Fractal Skills)

### 1. [Chaining Commands](./sub-skills/chaining-commands.md)
### 2. [Essential Commands](./sub-skills/essential-commands.md)
### 3. [Core Tools](./sub-skills/core-tools.md)
### 4. [Check if command exists](./sub-skills/check-if-command-exists.md)
### 5. [Default variable value](./sub-skills/default-variable-value.md)
### 6. [Read file line by line](./sub-skills/read-file-line-by-line.md)
### 7. [Loop over files](./sub-skills/loop-over-files.md)
### 8. [Set options](./sub-skills/set-options.md)
### 9. [Trap for cleanup](./sub-skills/trap-for-cleanup.md)