检索指定目录下所有子文件中的文件，根据所在文件夹中是否包含定义的关键字进行对文件改名，并移到指定目录，同时在指定目录夹下建立备份文件夹-Retrieve the specified directory the files in all subfolders, contains the keyword defined in the folder where the file was renamed and moved to the specified directory at the same t