filelist -- Recursively search directories for files 递归搜索目录文件
filelist searches dirpath for files that match search_pattern and continues searching recursively in all its subdirectories. If 公卫家园
directory(dirpath) is omitted, the search starts from the current directory (see pwd and cd).
By default, filelist will pick up all files, including system files that are usually hidden. To target a specific type of file using a 公卫论坛
pattern in the file name, use the pattern(search_pattern) option. The search_pattern string must conform to the rules of the
strmatch() function. For example, with pattern("*.csv"), filelist will return only file names that end with ".csv". 公卫人