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Bash Defensive Patterns

dokhacgiakhoa/bash-defensive-patterns

Master defensive Bash programming techniques for production-grade scripts. Use when writing robust shell scripts, CI/CD pipelines, or system utilities requiring fault tolerance and safety.

3k tokens
context cost
the whole folder, loaded on every use
2
files
instructions only
0
copies elsewhere
how many repositories repackaged it
505
stars on the repo
on the repository, not the skill itself

Install

one command, takes just this skill from the repository 
npx skills add https://github.com/Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI --skill bash-defensive-patterns

What comes with it

11 027 bytes besides the instruction
sub-skills/implementation-playbook.md

What it tells the agent to use

found in the instruction text
Bash runs shell commands — read the instruction before connecting

The instruction itself

8 sections, as written by the author

Bash Defensive Patterns

Comprehensive guidance for writing production-ready Bash scripts using defensive programming techniques, error handling, and safety best practices to prevent common pitfalls and ensure reliability.

Use this skill when

  • Writing production automation scripts
  • Building CI/CD pipeline scripts
  • Creating system administration utilities
  • Developing error-resilient deployment automation
  • Writing scripts that must handle edge cases safely
  • Building maintainable shell script libraries
  • Implementing comprehensive logging and monitoring
  • Creating scripts that must work across different platforms

Do not use this skill when

  • You need a single ad-hoc shell command, not a script
  • The target environment requires strict POSIX sh only
  • The task is unrelated to shell scripting or automation

Instructions

  • Confirm the target shell, OS, and execution environment.
  • Enable strict mode and safe defaults from the start.
  • Validate inputs, quote variables, and handle files safely.
  • Add logging, error traps, and basic tests.

Safety

  • Avoid destructive commands without confirmation or dry-run flags.
  • Do not run scripts as root unless strictly required.

Refer to resources/implementation-playbook.md for detailed patterns, checklists, and templates.

Resources

  • resources/implementation-playbook.md for detailed patterns, checklists, and templates.

🧠 Knowledge Modules (Fractal Skills)

1. implementation-playbook

How to use it

Copy the folder

Take dokhacgiakhoa/bash-defensive-patterns from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

The agent identifies a skill by the name field in its header. Two skills with the same name cannot sit side by side — one of them will be ignored.