Re: Minor request for enhancement: "beep on halt"
Richard Gooch (rgooch@atnf.csiro.au)
Mon, 14 Dec 1998 23:58:12 +1100
Miquel van Smoorenburg writes:
> In article <cistron.199812140735.SAA03215@vindaloo.atnf.CSIRO.AU>,
> Richard Gooch <rgooch@atnf.csiro.au> wrote:
> >Sorry, I don't agree. The shutdown(8) programme is what kills all
> >processes, unmounts filesystems, remounts the root FS read-only, syncs
> >the discs and then calls reboot(2) which halts/reboots.
>
> On slackware, maybe. On RedHat and Debian, shutdown is a program
> from the sysvinit suite. It just prints a message and then puts
> the system into runlevel 0 or 6.
>
> >I'm pretty sure about this: I recently hacked shutdown(8) from
> >util-linux (check out util-linux-2.9) to add support for a userspace
> >power off facility. Once it's safe, it can exec another programme to
> >do whatever you like (in my case it talks to some special hardware
> >which turns off my machine).
>
> If you want the system (non-slackware) to beep when it's safe to turn
> off the power, either hack the halt (8) binary, or edit the appropriate
> script that calls halt. In Debian that's /etc/init.d/halt
Yes, but my point was that I think you can do this in userspace. There
isn't need for a kernel change.
> The only thing you cannot do is beep in an endless loop, but you can
> beep 4 times and then call halt.
Why the limitation?
> Mike.
> --
> Indifference will certainly be the downfall of mankind, but who cares?
So what?
;-)
Regards,
Richard....
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