SC - Smart Copy Utility v1.20
Smart Copy is an incremental-backup type of file copy utility. That
is to say; it allows you to compare a source directory against a
destination directory and copy only those files which have changed.
It has been particularly useful because of the way I use master diskettes: Whenever I work on a system, I copy it onto my hard disk from the master diskette. I then proceed to modify the version that exists on my hard disk. When the modifications are complete, I update the master diskette.