Two users writing to the same file at the same time.

[AE Roy <debian_user@linuxfreemail.com>]

I've set up my system with 15 computers and 60 users so that they have a
directory where they all can share files, under /home/staff, I have
them belongign to the group teacher who is the owner of /home/staff, and
the GUID is set on /home/staff.

And I have a problem; If two teachers deceides to work on the same file at
the same time, then all changes made by the first to exit will be lost,
without him noticing.

This situation happens rarly, and when it does they don't know who's to
blame (me) and so I've manged to overcome the problem, but I need to solve
this.

I know CVS, but thats not an option. People I've talked to that know MS
say that in MS under the same situation, you'd gett a warning when someone
already had that file open, does anything similar exist for linux?
They all use OpenOffice.org to write these files.

Roy
Gratefull for any help I get.





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