AR> I have a few directories I want a backup of that also removes old
 AR> files, such as msg-bases, that may no longer be in the dir, but were in
 AR> the previous *.Zip file.  So I start by deleting specific
 AR> subdirectories from the previous *.Zip file.  Then add anything new or
 AR> changed.  This is much faster than just Zip everything from scratch,
 AR> since Zip simply skips over all files that have not changed.  What I
 AR> get is an incremental backup in a Zip file that can be UnZip'd for a
 AR> full restore of each of those dirs.

I've been using that approach on some machines that have no other means
of backup.  It works, but keeping the obsolete files pruned out of the
.ZIPs is a real pain.  Sure wish Info-ZIP would develop an option that
would do the whole thing--make the .ZIP match the current directory
without re-processing files that are unchanged.

Jack P.
 
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