1、　　用高级语言编写和调试一个简单的文件系统。模拟文件管理的工作过程。从而对各种文件操作命令的实质内容和执行过程有比较深入的了解。 2、　　要求设计一个n个用户的文件系统。每次用户可保存m个件，用户在一次运行中只能打开一个文件。对文件必须设置保护措施，且至少有Creat,Delete,Close,Write等命令。-1, with high-level language debugging and prepared a simple file system. Simulation document management process. Thus the various documents commands to the substance and implementation of a more in-depth understanding. 2, designed a n users file system. Each time a user kept m pieces in a user operation can open a file. The document must install protective measures, but at least Creat, Delete, Close, etc. Write orders.