import subprocess

def run_command(command: str, timeout: int = 30) -> str:
    try:
        result = subprocess.run(
            command,
            shell=True,
            capture_output=True,
            text=True,
            timeout=timeout
        )
        output = ""
        if result.stdout:
            output += f"STDOUT:\n{result.stdout}"
        if result.stderr:
            output += f"\nSTDERR:\n{result.stderr}"
        output += f"\nExit code: {result.returncode}"
        return output if output.strip() else "Command ran successfully with no output."
    except subprocess.TimeoutExpired:
        return f"Error: Command timed out after {timeout} seconds."
    except Exception as e:
        return f"Error running command: {str(e)}"