How does this skill handle macOS and Linux command differences?

It provides abstraction patterns for commands like sed, date, and readlink that behave differently between GNU (Linux) and BSD (macOS) implementations.

Why use #!/usr/bin/env bash instead of #!/bin/bash?

Using env is more portable because it locates the bash executable in the user's PATH rather than assuming it is located in a specific hardcoded system directory.

What is the difference between Bash and POSIX shell scripts?

Bash offers extended features like arrays and double brackets, while POSIX is a universal standard ensuring scripts run on almost any Unix-like system including minimal environments.

Can I use this to lint my scripts for errors?

Yes, it includes ShellCheck-compatible patterns and instructions for disabling specific warnings when intentionally using non-portable features.

Shell Script Portability

Name: Shell Script Portability
Author: TheBushidoCollective

byTheBushidoCollective

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開発者ツール

Ensures shell scripts execute consistently across Linux, macOS, and POSIX-compliant environments.

This skill empowers Claude to author robust, cross-platform shell scripts by identifying and resolving compatibility issues between Bash and POSIX standards, as well as differences between GNU and BSD utilities. It provides patterns for environment detection, portable string manipulation, and system-agnostic command execution, ensuring your automation scripts work reliably on any Unix-like system without manual refactoring.

主な機能

01ShellCheck-optimized script generation

02POSIX and Bash compatibility mapping

03Automatic environment and architecture detection patterns

0439 GitHub stars

05Cross-platform utility normalization (GNU vs. BSD)

06Portable file handling and temporary file creation

ユースケース

01Converting Bash-specific scripts to POSIX sh for maximum system compatibility

02Standardizing dev-ops automation tools across diverse developer workstations

03Creating CI/CD scripts that need to run on both Ubuntu and macOS runners

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add thebushidocollective/han shell-portability

For use in Claude.ai and ChatGPT

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