I've been thinking about the best way to do this, and I too didn't want to rely on having a backup script running all the time. Windows seems to have a low-lev

I've been thinking about the best way to do this, and I too didn't want to rely on having a backup script running all the time. Windows seems to have a low-level api for querying the filesystem/vfs for changes since you last looked: http://msdn.microsoft.com/en-us/library/windows/desktop/aa363798(v=vs.85).aspx http://msdn.microsoft.com/en-us/library/windows/desktop/aa36... And BTRFS has some ability to do this with find-new: http://www.tummy.com/blogs/2010/11/01/fun-with-btrfs-what-files-have-changed/ http://www.tummy.com/blogs/2010/11/01/fun-with-btrfs-what-fi... It's nice that btrfs has these new interesting features, also see send/receive, but it's not available in the vfs, and I suppose never will be.