On Wed 06 Dec 2017 at 15:25:10 (-0800), James H. H. Lampert wrote: > On 12/6/17, 2:53 PM, Michael Lange wrote: > >uh, I guess you ought to have used your time to check your machine and > >read some docs instead of figuring out how to best insult the debian > >developers ;) > >(scnr) > > Now, now, you walk up to the physical console on an AS/400, you're > not going to be able to do a PWRDWNSYS from a sign-on screen, nor > can do it if signed on as a user who doesn't have sufficient > authority to do a PWRDWNSYS. And you might be physically locked out > of the front panel. It's even possible that you might be physically > interdicted from unplugging the box, or shutting it down from the > circuit breaker panel.
I can't speak for your jurisdiction, but typically you can shut down a machine room without access to the room itself. I guess one reason for this is that the halon fire suppression would kill you on entry. With the Cambridge University computing service in the days of the 370/165, the cut-off switch was high on the wall in the "cafeteria" area (self-service card reader and line printer) which was open to users 24 hours a day. > Not every OS assumes by default that anybody with physical access to > the hardware also has the authority to shut it down. I didn't know we were talking about authority. One of the pastimes of kids in rough neighbourhoods is to pull the Engine Stop lever while a bus is picking up passengers. > (And likewise, accounts, including QSECOFR [the closest OS/400 > equivalent to root] can be restricted to certain physical > terminals.) Cheers, David.