说明：  该文件是基于socket编程的ftp文件传输的源代码。包含了服务器和客户端的源代码，是使用C语言编写的。运行在linux环境中。无解压密码。不妥之处，还请高手给予指点。
(the document is based on the socket programming ftp file transfer the source code. Includes server and client source code is the use of the C language. Run on the Linux environment. No extract passwords. Nothing wrong with it and also invited experts to give instructions.)