Click the terminal, type a supported command, and press Enter. ArrowUp and ArrowDown browse command history. Ctrl+L clears the display.
Support
Use the lab safely.
Clairos Learn is static, local-only, and resettable. These notes explain the fake terminal, progress, and safety model.
0/25 lessons
0/7 missions
Run reset in the terminal to rebuild the fake filesystem, or use Reset progress in the course map to clear local progress and settings.
Progress and fake files are stored only in this browser. Clearing browser storage clears the lab.
The terminal is a deterministic simulator. It does not run host commands, call APIs, open sockets, or send command input to a server.
Security model
Every command stays fake.
Unsupported commands are rejected, dangerous shell operators are blocked, and fake admin commands only return training output.
- This is not a real shell.
- Unsupported commands are explained instead of executed.
- The simulator does not use network requests or server-side command execution.
- Dangerous delete, sudo, ssh, and service actions are fake and guarded.
- Simple text pipes and one safe note redirection are simulated without invoking a shell.