rsync is a clever algorithm for synchronizing files in a way that is bandwidth efficient. It was invented by Andrew Tridgell and Paul Mackeras. It is described here:
http://rsync.samba.org/tech_report/
rsync is also a program that implements the algorithm.
NasBackup [L1 ] is an Open Source Tcl/Tk application that provides a GUI layer on top of rsync.
CMcC notes that rsync can be used to backup a frequently changing database, for example by:
rsync rsync://wiki.tcl.tk/wiki/wikit.tkd .
One would have to repeat the rsync until no changes were sent, though. Is there some return value from rsync that tells you how much work it had to do?
RLH Are there any other Tcl/Tk guis for rsync?