How does using [[ ]] differ from the standard [ ] syntax?

The [[ ]] syntax is a modern Bash keyword that is more powerful, handles empty strings more gracefully, and supports regular expression matching without external tools.

Does this skill support shells other than Bash?

While optimized for Bash, many of the fundamental principles—such as quoting, function scope, and safety flags—apply to Zsh and other POSIX-compliant shells.

What is 'strict mode' in shell scripting?

Strict mode refers to the usage of 'set -euo pipefail', which ensures scripts exit on errors, catch undefined variables, and fail pipelines if any command within them fails.

Why does this skill emphasize variable quoting?

Properly quoting variables (e.g., "$VAR") is essential in shell scripting to prevent word splitting and glob expansion, which frequently cause bugs when paths contain spaces.

Bash & Shell Scripting Fundamentals

Name: Bash & Shell Scripting Fundamentals
Author: TheBushidoCollective

byTheBushidoCollective

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開発者ツール

Guides the creation of robust, portable Bash scripts using modern best practices and safety standards.

概要

The Shell Scripting Fundamentals skill equips Claude with a comprehensive set of patterns for writing maintainable and error-resistant shell scripts. It emphasizes 'strict mode' configurations like 'set -euo pipefail', proper variable quoting to prevent word splitting, and modern syntax for conditionals and command substitutions. By adhering to these standards, users can avoid common pitfalls in automation, ensure cross-platform portability, and significantly improve the reliability of deployment workflows and system utilities.

主な機能

39 GitHub stars
Implements 'strict mode' (set -euo pipefail) for advanced error handling
Provides optimized loop structures and robust array management
Utilizes modern test syntax [[ ]] and numeric comparison patterns
Enforces variable quoting and proper scope with local declarations
Standardizes function definitions and preferred command substitution syntax

ユースケース

Developing maintainable system utilities and CLI tools for Linux/Unix environments
Refactoring legacy shell scripts to meet modern safety and portability standards
Generating robust CI/CD pipeline scripts and automated deployment hooks

概要

主な機能

39 GitHub stars
Implements 'strict mode' (set -euo pipefail) for advanced error handling
Provides optimized loop structures and robust array management
Utilizes modern test syntax [[ ]] and numeric comparison patterns
Enforces variable quoting and proper scope with local declarations
Standardizes function definitions and preferred command substitution syntax

ユースケース

Developing maintainable system utilities and CLI tools for Linux/Unix environments
Refactoring legacy shell scripts to meet modern safety and portability standards
Generating robust CI/CD pipeline scripts and automated deployment hooks