操作实验代码 文件管理 管理用户名与用户密码,用户名下的文件名,文件个数,文件长度-Operation test code files management management user name and password to the user username filename, document number, file size

批量删除电脑，或某个盘符下的某一类型的文件譬如工程中产生的*.OBJ文件-Batch delete the computer, or a letter under certain types of files such as works produced*. OBJ file