How to backup a single file regularly?

I'm playing a Hardcore minecraft Feed The Beast map. I want a program that can backup the save that I'm playing on every 5-10 minutes so that if something goes wrong, I can fix it. I would also like the program, thought it doesn't have to, to be able to delete the backups after 10 or so backups. Is there a program that can do this for me?

No proper backup program can do all that and be easy to restore from. Backup programs tend to blok the files into a containing file of their own type and you then need to run the full restore program to get them back. You could write a command line script to copy the file to a folder named by the time and date of the copy, but with the same extension. You need to use the date in reverse order for easy recovery. So 20140828.(file extension) would be plain date, preferably with the time added to the name as, say 2011 for 8:11 at night. You can then set up the task scheduler to run it at whatever intervals you like., but use caution, too many saves WILL impact on machine performance.

BackupChain does all of the things you described, see www.backupchain.com