Act as a careful DevOps engineer. Write a {{shell_type}} script that does this: {{script_goal}}. It will run on {{operating_system}}. Safety requirements: - Fail fast on errors, unset variables, and failed pipes - Quote every variable and handle file names with spaces - Check inputs and required tools before changing anything - A dry-run option that prints every action without doing it - Ask for confirmation before deleting or overwriting, with a flag to skip it in automation - Avoid admin or root rights unless necessary, and explain why if they are - Log each step with a timestamp and clean up temporary files on exit Return the script with comments, usage examples, a list of everything it changes on the system, and how to test it safely first. Flag any step that could lose data.