Even when operating in SCP mode, clients like WinSCP are typically not pure SCP clients, as they must use other means to implement the additional functionality (like the ls command).
即使在SCP模式下操作，WinSCP等客户端通常也不是纯粹的SCP客户端，因为他们必须用其他手段实现额外的功能（例如ls命令）。