Linux/UNIX has this too, through mtime (a time not a bit)! Plus it's idempotent, unlike the archive bit! (e.g. if you lost your last backup, you have a time, n

Linux/UNIX has this too, through mtime (a time not a bit)! Plus it's idempotent, unlike the archive bit! (e.g. if you lost your last backup, you have a time, not a cleared bit, so you can redo it)