Show the Last Time a File Was Opened & Accessed in Mac OS X
You can show the precise last time a specific file was opened, an app was launched, or folder was accessed on a Mac, and the information is visible directly in the OS X Finder. There are actually two simple ways to see this file access information, and both are equally useful though as you’ll see they’re best used for slightly different purposes.
Knowing the last file access time is useful for so many reasons, whether it’s determining the usage history of a file for your own purposes, or perhaps for more mildly forensic intentions, to help figure out more details about someone using a Mac and the specific access times of a file or app that was in use. Because it shows the date and time information, this goes beyond the Recent Items list trick which simply shows what files were opened.
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