Audacity is a GUI-based audio editing application and does not have a command-line interface.

For audio manipulation from the command line, consider using:
- sox: Sound eXchange - the Swiss Army knife of audio manipulation
- ffmpeg: For audio conversion and processing

Audacity features include:
- Multi-track audio recording and editing
- Support for various audio formats
- Audio effects and filters
- Spectrum analysis
- Noise reduction

Website: https://www.audacityteam.org/

=== Documentation Retrieved ===
Note: Audacity is a GUI application without CLI help
Date: Thu Jul 10 09:20:00 AM NZST 2025