Thanks, this is brilliant. I have to make sure it catches XDCMP sessions as well as SSH ones, but it seems bound to. Brilliant! Yes, the answer might well be a server and all remote logins, from a technical point of view. Agreed. They have talked about that. But how they would manage to maintain it themselves, if something happened to me? This is doing our best to keep it as simple as possible, and to make sure that if it falls over, it will be no more than inconvenient. Or if I fall over. Peter

Assuming a debian-like system, what about molly-guard?

http://www.ubuntugeek.com/molly-guard-protects-machines-from-accidental- shutdownsreboots.html http://packages.debian.org/unstable/admin/molly-guard

Cheers,

David