bash-defensive-patterns

Production-grade Bash scripting with strict error handling, defensive patterns, and safety best practices. 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. Enable bash strict mode at the start of every script to catch errors early. Key flags: Implement proper cleanup on script exit or error. Always quote variables to prevent word splitting and globbing issues. Use arrays safely for complex data handling. Use [[ ]] for Bash-specific features, [ ] for POSIX. - Covers 10 fundamental patterns including strict mode ( set -Eeuo pipefail ), error trapping, variable quoting, array handling, and safe temporary file management - Includes advanced techniques for argument parsing, structured logging, process orchestration with signals, and idempotent script design - Provides templates for function definitions, file operations, command substitution, and dry-run support to prevent common pitfalls - Emphasizes input validation, dependency checking, and cleanup mechanisms to ensure reliability across different platforms and edge cases - 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...