Here at QMC we run a large network of machines, with a VAX, a Sequent
Balance, and some Suns serving files via NFS. The undergradute lab
consists of 43 Whitechapel MG1's, all providing the same "virtual"
system to the users. It became obvious to me that some quick and
efficient way of sending short messages to users of the network was
needed, without the sender having to be aware of the physical location of the
recipient. Therefore I wrote a network-wide message system, which is
presented here. It is a one-shot mechanism, similar to "wall", expect
that it can be sent to specific users or specific machines.

The server is invoked from inetd, so appropriate entries have to be
inserted in either "inetd.conf" or "servers", depending on the machine, and
also in "services", of course. I have found this software extremely
useful and hope that others find it so as well.

The program has been tested under Sequent's DYNIX, 4.2BSD, Sun 3.4, and
Whitechapel 42nix. It won't work with System V.
