DateNamedFile-用于带有嵌入日期的文件 用法 require 'date_named_file' update_file_template = DateNamedFile . new ( 'hathi_upd_%Y%m%d.txt.gz' ) upd = update_file_template . in_dir ( '/tmp/' ) #=> # # Today is 2019-11-22 # All of these will produce either a DatedF