Multiple file versions -- FLAME ON!!

[David M. Siegel]

Multiple file versions is a great feature to have. It does not have to
just be an endless sink of disk space. On Twenex systems, for example, a
maximum number of generations count is maintained.  Endless versions
of files only exist if you feel a need for it. The count can be set to
one if you wish to be risky.  In a typical edit-compile-run session you
end up with a large generation number, but only two or three back copies
of the program.  System daemons can hunt around for people with excess
versions and can warn them.  It could event delete them if disk space
is really tight.  Finally, disk space is getting cheaper every day. For
10 grand you can add 500 megabytes to your system. 

Does anyone know if a unix system that has been hacked to have multiple
versions?  

It would also be nice to have an unremove command... 
-- 
David Siegel			Usenet:	mit-eddie!mit-hermes!dms
The MIT AI Laboratory		Arpa:	dms at mit-hermes.arpa
Cambridge, MA 02139