Messages in this thread | | | From | (Miquel van Smoorenburg) | Subject | Re: Minor request for enhancement: "beep on halt" | Date | 14 Dec 1998 12:21:35 +0100 |
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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
The only thing you cannot do is beep in an endless loop, but you can beep 4 times and then call halt.
Mike. -- Indifference will certainly be the downfall of mankind, but who cares?
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