说明：  程序，实现一个守护进程，监控指定目录（此目录名称记录在配置文件中），一旦发现目录下有文件，先加锁，加锁成功后把文件内容追加到指定指定文件（此文件名称记录在配置文件中）中，然后删除读取的文件；（fcntl文件加锁）
(Program, a daemon to monitor the specified directory (the directory name is recorded in the configuration file), once the directory file, the first lock, the lock after the success of the contents of the documents appended to the specified specified file (this file name is recorded in theconfiguration file) and then delete the file read (the fcntl file locking))