legacy code

Explores how AI can modernize brittle legacy Bash scripts by spotting anti-patterns, improving quoting, error handling, and portability, and proposing safer, modular refactors. It shows workflows with linters (shellcheck, shfmt), tests, and CI plus LLM-assisted edits, weighs when to migrate to Python, and stresses prompts, guardrails, and human review to prevent regressions.