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47 lines
1.7 KiB
Markdown
47 lines
1.7 KiB
Markdown
---
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name: bash-defensive-patterns
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description: "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."
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risk: unknown
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source: community
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date_added: "2026-02-27"
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---
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# Bash Defensive Patterns
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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.
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## Use this skill when
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- Writing production automation scripts
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- Building CI/CD pipeline scripts
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- Creating system administration utilities
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- Developing error-resilient deployment automation
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- Writing scripts that must handle edge cases safely
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- Building maintainable shell script libraries
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- Implementing comprehensive logging and monitoring
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- Creating scripts that must work across different platforms
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## Do not use this skill when
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- You need a single ad-hoc shell command, not a script
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- The target environment requires strict POSIX sh only
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- The task is unrelated to shell scripting or automation
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## Instructions
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1. Confirm the target shell, OS, and execution environment.
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2. Enable strict mode and safe defaults from the start.
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3. Validate inputs, quote variables, and handle files safely.
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4. Add logging, error traps, and basic tests.
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## Safety
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- Avoid destructive commands without confirmation or dry-run flags.
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- Do not run scripts as root unless strictly required.
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Refer to `resources/implementation-playbook.md` for detailed patterns, checklists, and templates.
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## Resources
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- `resources/implementation-playbook.md` for detailed patterns, checklists, and templates.
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