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bash-defensive-patterns

Write more reliable Bash scripts for production automation, CI/CD pipelines, and system administration. Covers input validation, error handling, structured logs, safe temporary files, dry runs to preview changes, and scripts designed for safe reruns.

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원문원문 설명 보기

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.

설치 방법 보기

이럴 때 유용합니다

  • Writing production automation scripts
  • Improving error handling in CI/CD scripts
  • Adding dry runs to deployment scripts
  • Reviewing temporary file cleanup

포함된 파일(2)

  • SKILL.md1.9 KB
  • references/details.md9.7 KB

SKILL.md(원문)

설치하기 전에 에이전트에게 전달되는 지시 내용을 확인할 수 있습니다.

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
  6. Use functions for reusability - Prefix with meaningful names
  7. Implement structured logging - Include timestamps and levels
  8. Support dry-run mode - Allow users to preview changes
  9. Handle temporary files safely - Use mktemp, cleanup with trap
  10. Design for idempotency - Scripts should be safe to rerun
  11. Document requirements - List dependencies and minimum versions
  12. Test error paths - Ensure error handling works correctly
  13. Use command -v - Safer than which for checking executables
  14. Prefer printf over echo - More predictable across systems

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