public static void Run2(string host)
        {
            string        logname    = ReaderLog.FS_LS;
            DateTime      start_time = new DateTime(2013, 10, 29, 15, 14, 0);
            List <string> tags       = ReaderUtil.ReadTags(host, logname, (fLine) =>
            {
                DateTime?rec_time = ReaderDecoder.ExtractDateTime(fLine);
                if (rec_time != null)
                {
                    if (rec_time.Value > start_time)
                    {
                        return(true);
                    }
                }
                return(false);
            });

            foreach (string tag in tags)
            {
                Console.WriteLine("Tag: {0}", tag);
            }
        }