cli-development
CLI Development Guidelines
Best practices for designing and implementing command-line interface (CLI) applications across programming languages.
CLI Design Principles
Unix Philosophy
Follow the core Unix philosophy for robust, composable CLIs:
- Do one thing well - Each command should have a single, well-defined responsibility
- Make it composable - Design output to work as input to other programs
- Handle text streams - CLIs work with stdin/stdout/stderr
- Exit cleanly - Use appropriate exit codes (0 for success, non-zero for errors)
- Fail fast - Detect and report problems immediately
- Be scriptable - All functionality must be accessible from non-interactive contexts
Command Structure
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