Thus spoke Matthias Scheler:
> I suppose SunOS does this via NIS (it's hard to get a Sun working without
> NIS) which you probably dont' use.

SunOS (4.xxx) shutdown
uses /etc/xtab to get a list hosts  who have remote mounts.
It usese rwall to send the warning message.
(See: shutdown(8) exportfs(5) rwall(1C) on Sun Release 4.1)

Juergen.


-- 
Juergen Marenda            UNOX is a trademark of Deutsche Lebensmittelwerke AG
marenda@JMnet.metaworks.de