Can I use these patterns for cross-platform scripts?

Yes, the skill provides guidance on using POSIX-compliant syntax when portability is required and Bash-specific features like [[ ]] for enhanced safety when available.

Does this skill support dry-run functionality?

Yes, it includes patterns for a DRY_RUN mode, allowing users to preview what a script would do before executing destructive operations like file deletions.

How are variables handled for maximum safety?

The skill enforces consistent quoting of all variables and provides patterns for validating required environment variables before script execution starts.

How does this skill handle script cleanup?

It implements error trapping (EXIT and ERR traps) to ensure that temporary files are deleted and background processes are terminated even if a script fails.

What is Bash strict mode and why use it?

Bash strict mode uses the command 'set -Eeuo pipefail' to ensure scripts exit immediately on errors, undefined variables, or pipe failures, preventing silent bugs.

Bash Defensive Patterns

Name: Bash Defensive Patterns
Author: HermeticOrmus

byHermeticOrmus

0•

部署与 DevOps

Implements production-grade defensive programming techniques to create robust, fault-tolerant shell scripts and CI/CD pipelines.

This skill provides a comprehensive framework for writing high-reliability Bash scripts by enforcing safety best practices and advanced error-handling patterns. It equips Claude with the logic needed to implement strict modes, secure variable quoting, atomic file operations, and idempotent designs. Perfect for developers and DevOps engineers, it ensures that shell-based automation is resilient against common pitfalls, edge cases, and unexpected environment states in production settings.

主要功能

01Idempotent design patterns and dry-run support for safe executions

02Safe variable and array handling to prevent word splitting and globbing

03Comprehensive error trapping and automated resource cleanup

040 GitHub stars

05Strict mode implementation using 'set -Eeuo pipefail' for error detection

06Structured logging with timestamps and severity levels

使用场景

01Creating production-grade system administration and maintenance utilities

02Developing maintainable and portable shell script libraries for infrastructure

03Building resilient CI/CD pipeline automation and deployment scripts

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add hermeticormus/hermetic-line bash-defensive-patterns

For use in Claude.ai and ChatGPT

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