Notification of changes to files outside of Sublime

Is there a way to get a notification when an opened file is overwritten by another application? This can happen a lot if something is also open in VS, or a diff/merge tool, is the output of something I'm debugging, or is a running log file.  In most cases, I'd like to know when it happens as well as have the choice of reloading or ignoring even if I don't have any unsaved changes.  I may want to keep the old data intentionally, or use it to revert the overwrite, or maybe I just want notification as feedback to know that, yes, the file did get update (maybe the contents are the same).  Many other text editors do this use case very well. But they suck at the running log case where the modal message box continually pops up and then you cant even close the file.  In that case, you also want to be able to tell it to auto update without a notification for that specific file.