OS Module

os.exec(command: string, ...): { ok: string?, err: string? }

Executes the command as a child process, waiting for it to finish and collecting all of its output.

os.time(): float

Returns the number of non-leap-microseconds since January 1, 1970 UTC.

os.sleep(secs: number)

Puts the current thread to sleep for at least the specified amount of time.