# Bash Linux

> Bash/Linux terminal patterns and critical commands.

- Skill: `dokhacgiakhoa/bash-linux` (Agent Skill, multi-file: 10 files)
- Install (CLI): `npx skillmds@latest add dokhacgiakhoa/bash-linux`
- Raw SKILL.md: https://api.skillmd.com/api/skills/dokhacgiakhoa/bash-linux/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: Dokhacgiakhoa (https://skillmd.com/u/dokhacgiakhoa)
- Updated: 2026-08-19
- Page: https://skillmd.com/skills/dokhacgiakhoa/bash-linux

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# Bash Linux Patterns

> Essential patterns for Bash on Linux/macOS.

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## 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)