I receive a lot of data files from my clients which are named in date time format. Example File Name: 20121029153045.txt, which means year 2012, month 10, day 29, hour 15, minutes 30 and seconds 45.
I need to quickly check the dates for which the files are missing or not received. For example, if I receive files for 3 months, starting from August, I need to check which are the missing files from August to October.
What is the quickest way to do this? I am using Windows XP SP 2, 32 bit