Revert all files in a folder [closed]
I had the same problem, so I wrote this script to restore any dropbox folder to its state as of a given date:
https://github.com/clark800/dropbox-restore
You have several options:
If you've recently done something that has modified a large bunch of files in your Dropbox and you want to revert all those changes, you can contact the support staff at Dropbox to have the modifications rolled back. See https://www.dropbox.com/help/400/en for details. Based on discussions in the Dropbox forums, it seems like they are also willing and able to restore any given folder to an arbitrary date, as long as it is within the bounds stored by Dropbox (30 days for a basic account; for accounts with the packrat feature all the way back to when packrat was activated).
You could use the script written by clark800, linked to in a separate answer to this question. I haven't used it so cannot vouch for it, but many seem very happy with it!
If you are on a Mac (OS X 10.7 or later), you can try out a new app called Revisions (available at https://www.revisionsapp.com) that I've been working on. The app allows you to select any folder in your Dropbox and shows you a timeline of all edits for that folder. Then, you can choose to restore or download any version of any single file, or restore or download an entire folder (including any subfolders) to its state at any desired point in time (subject to the Dropbox bounds stated above).
To my knowledge restoring to a particular revision is limited to a per file operation. It would be possible to accomplish what you are looking for using their REST API however it would require custom code.