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

使用YACC进行dot图形语言的语法分析，仅上传编写的代码，使用时需先安装YACC（linux系统下），并联合编译，或者运行MAKE完成编译生成相应可执行文件。-YACC performed using dot syntax analysis, upload only part of the code, when used need to install (under linux system) YACC, and jointly compile, compile or run MAKE gen

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.

此程序是lex的示例，在linux环境编写，是基本的词法编辑器，适合学习编译的人使用。-This program is an example of lex in linux prepared environment is a basic lexical editor for study compiled people.