What is the 'unofficial bash strict mode'?

It uses 'set -Eeuo pipefail' to ensure scripts exit immediately on errors, unset variables, or pipe failures, catching bugs early in execution.

Is this skill suitable for CI/CD pipelines?

Yes, it focuses on creating reliable, idempotent, and error-aware scripts specifically designed for production environments like GitHub Actions, Jenkins, or GitLab CI.

Why should I quote all variables in Bash?

Quoting variables like "$var" prevents word splitting and globbing, which are common sources of logic bugs and security vulnerabilities in shell scripts.

How does this skill handle script cleanup?

It implements 'trap' commands to ensure temporary files and background processes are cleaned up even if the script fails or is interrupted by the user.

Does this skill support dry-run functionality?

Yes, it includes patterns for implementing a --dry-run flag, allowing users to preview changes before they are actually executed on the system.

Bash Defensive Patterns

Name: Bash Defensive Patterns
Author: Microck

byMicrock

•

110

•

Deployment & DevOps

Implements robust, production-grade shell scripting techniques to ensure script reliability and safety across diverse environments.

This skill equips Claude with specialized patterns for writing industrial-strength Bash scripts, moving beyond simple automation to production-ready utilities. It focuses on defensive programming principles such as strict mode execution, sophisticated error trapping, and safe variable handling to prevent common shell pitfalls. Whether you are building CI/CD pipelines, system administration tools, or complex deployment scripts, this skill ensures your shell code is idempotent, portable, and resilient against unexpected failures.

Key Features

01Idempotent script patterns for repeatable deployment tasks

02Strict mode configuration for early error detection

03110 GitHub stars

04Safe variable and array handling to prevent word splitting

05Robust argument parsing and command-line interface design

06Comprehensive error trapping and cleanup routines

Use Cases

01Building idempotent infrastructure-as-code shell wrappers

02Developing error-resilient CI/CD pipeline automation

03Creating portable system administration and maintenance utilities

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add microck/ordinary-claude-skills bash-defensive-patterns

For use in Claude.ai and ChatGPT

Download Skill