From: "Russ Cox" <rsc@plan9.bell-labs.com>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] Morning Quickies: nontechnical]
Date: Wed, 14 Jun 2000 12:23:28 -0400 [thread overview]
Message-ID: <200006141627.MAA02691@smtp2.fas.harvard.edu> (raw)
Finally, is there a way to shut down the system
gracefully and reboot from the commandline?
If you're booted from a file server, type
^P at a cpu server console, or echo reboot >/dev/reboot.
If not, you need to halt the disks first:
If you're standing at the machine, type
disk/kfscmd halt and then reset the machine.
If you want to do everything remotely,
I believe the following will suffice (I haven't
tried it recently, but it worked four years ago).
Russ
#include <u.h>
#include <libc.h>
void
main(void)
{
int fd;
Waitmsg w;
fd = open("/dev/reboot", OWRITE);
if(fd < 0)
sysfatal("open: %r");
switch(fork()) {
case -1:
sysfatal("fork: %r");
case 0:
execl("/bin/disk/kfscmd", "disk/kfscmd", "halt", nil);
break;
default:
wait(&w);
break;
}
fprint(fd, "reboot");
}
next reply other threads:[~2000-06-14 16:23 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-06-14 16:23 Russ Cox [this message]
-- strict thread matches above, loose matches on Subject: below --
2000-06-15 7:35 Bernd Kuehl
2000-06-14 17:42 forsyth
2000-06-14 15:47 James G. Stallings II
2000-06-14 16:11 ` Andrey Mirtchovski
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