bash-defensive-patterns SKILL.md skillA

bash-defensive-patterns from martineserios/thebrana is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

mdr add martineserios/thebrana/bash-defensive-patterns@git:20260612.b83c59d

Pins git:20260612.b83c59d in mdr.lock. Pin the fingerprint instead.

Audit grade

A, 17 of 17 checks passed

Kind

SKILL.md skill

Repository

martineserios/thebrana

Path

system/skills/bash-defensive-patterns/SKILL.md

Versions recorded

1

Latest version

git:20260612.b83c59d, committed Jun 12, 2026

Size

2,267 bytes

Repository stars

3

License

MIT

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.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# 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.

## When to Use This Skill

- 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

## Detailed patterns and worked examples

Detailed pattern documentation lives in `references/details.md`. Read that file when the navigation tier above is insufficient.

## Best Practices Summary

1. **Always use strict mode** - `set -Eeuo pipefail`
2. **Quote all variables** - `"$variable"` prevents word splitting
3. **Use [[]] conditionals** - More robust than [ ]
4. **Implement error trapping** - Catch and handle errors gracefully
5. **Validate all inputs** - Check file existence, permissions, formats
…

Read the whole file at its exact version.

How to install

mdr add martineserios/thebrana/bash-defensive-patterns@sha256:f82f5c9c7ecf6551

[![mdr](https://markdownregistry.com/badge/art_db764ozzcjeqw7hd.svg)](https://markdownregistry.com/a/art_db764ozzcjeqw7hd)

Versions

The registry has recorded 1 version of this file, committed on Jun 12, 2026.

Audit of the latest version

Source

API

GET https://markdownregistry.com/api/v1/artifacts/art_db764ozzcjeqw7hd
GET https://markdownregistry.com/api/v1/resolve?ref=martineserios/thebrana/bash-defensive-patterns
GET https://markdownregistry.com/api/v1/blob/f82f5c9c7ecf65516e53db01de1cf9a5f0ea08bd736b415f8fa9b3d541fe3b69

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

More from martineserios/thebrana

Every file in martineserios/thebrana

Other files named bash-defensive-patterns

Browse by kind, by grade A, or by owner.