【Ruby】删除旧文件

一个删除旧文件的函数，通常用于删除较老的log文件。

 module FileUtils2

    ONE_DAY_SECONDS = 60*60*24

    # remove the old files, return the number of files that removed.    

    def remove_old_files(dir_path, days_ago)

        count = 0    

        dir_path2 = dir_path + File::ALT_SEPARATOR unless dir_path.end_with?(File::ALT_SEPARATOR)

        d = Dir.new dir_path2    



        now = Time.now

        

        d.each  {|filename|     

            next if filename == '.' or filename == '..'



            file_path = dir_path2 + filename

            next if File.directory?(file_path)

            

            f = File.new(file_path)

            diff = now.to_i - f.mtime.to_i

            f.close

            day = diff/ONE_DAY_SECONDS

            

            next if day <= days_ago

            

            File.delete(file_path)

            puts "Delete: #{file_path}." 

            count += 1

        }

        return count

    end

end