Here is a great Google Drive question we got today:
How can I find out what files I shared with this person? They don't work for us any more and want to make sure they don't have access to our files.
Easy! Just open Google Drive in your browser (drive.google.com) and use the Search box at the top.
- Click the little Search Options down arrow and you'll see the magic field:
Usually I make it a habit to share only folders with other teams or users, so I don't have to modify a ton of individual files later. Just un-share one folder instead.