linux 环境下获取sd卡或指定磁盘的空间状态，并以windows的方式显示，适合习惯windows编程的用户使用linux环境编程-linux environment, access to the sd card or the specified disk space status, and display windows of the way, for habits of windows programming user programming linux environment

在Linux操作系统，使用C++模拟实现云盘操作，基本实现文件的上传和下载、秒传、断点续传等功能。-In the Linux operating system, use C++ simulation cloud disk operations, basic file upload and download, second pass, HTTP and other functions.