Periodically check for any changes in a given Google Drive file and receive an email notification if there are any, within your given time-frame.
The following Google Apps Script is designed to periodically check for any changes that have occurred to a given Google Drive file (ie edits to it) and send an email to notify of that. It goes through the Revision (Version History) of the file and looks at the modification dates for those that match with your given timeframe, to then collect the Username & Email address of the person that made those edits for inclusion in the email.
So as an example you may have a Google Sheet where you want to setup a check every 4 hours, to then be emailed if there have been any edits to it, along with who made those edits.
I use Google Apps Script to support staff and students in my job. I enjoy dabbling with creating tools to help with automation and I freely share my learning experiences on my blog: www.pbainbridge.co.uk