On Sun, 10 Aug 2014 06:45:04 +0000 Bonno Bloksma sent:
> Charlie: According to the man pages all 3, halt, poweroff and reboot,
> use the shutdown command to perform the necessary steps when not
> starting in runlevel 0 or 6, which is pretty much always. So it is
> really weird that in your case poweroff does not work but shutdown
> does.
Actually poweroff does turn off the machine, and I'm unsure why the
first time I tried it, it failed. Possibly I used it in a user terminal
rather than one that was logged as root.
But I close my system down; all open, running programs off; leaving only
one root terminal up and running, and anything that the system has
running in the background that I don't actually start.
The first time I tried poweroff it didn't work, but produced no error
message. The next time, after my post, I tried it again and it worked.
It worked very quickly, and I was a little worried that possibly it
didn't park the hard drive properly. Because when I use "shutdown now".
It takes longer to turn off the machine and there is a blinking cursor,
"-" on the monitor before the hardware is turned off.
My thought is that "shutdown now" is not in such a hurry and parks the
harddrive properly. But it could just be that it then takes longer
because it evokes poweroff, if my reading of your description is
correct, and that's the reason for the delay?
The "shutdown now" delay is not always of the same length of time.
Sometimes it takes a little longer than others. Maybe poweroff would
also take longer if I used it at those times.
Superstition wins the day for me. I think that shutdown now, because it
takes longer to turn the machine off, seems to be doing the job
properly.
But halt definitely only shuts down the system and leaves the hardware
running, on every occasion that I have fooishly used it out of long
habit and not thinking about what I'm doing. To stop the machine I then
pull the plug.
Charlie
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