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I have a filesystem that I'd like to unmount if it goes unused for X amount of time. Is there a clean(ish) way to determine how long its been since a filesystem was last accessed?
I've written a script that simply lists all files on the file system, sorts by last accessed date, and compares that with the current date. It works, but I figure there has to be a more elegant solution. Plus this won't be practical if the filesystem grows substantially in size, or if the filesystem is mounted with the option noatime.
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