I have a Dropbox folder which is shared by couple of users. I would like to make a backup of this folder that will occur every week and store this backup on another hard drive.

I can simply copy the entire folder each time and this will be the backup, but I would like to copy only the files that have been changed or created during that week.

I thought of creating a batch script that will check each file in the Dropbox folder recursively and see its modified date. If that date is later then a given one (current backup date) it will copy the file to a folder named BackUP[Date].

Do you think this solution is OK?