Kill the power faster than poweroff?

Bernd Schubert bernd-schubert at
Sat Sep 13 11:43:26 EDT 2003

On Thursday 11 September 2003 16:53, David Mathog wrote:
> Is there a faster way to shutdown a system and kill
> the power than "poweroff"?  This is for use in
> emergency overheating conditions, where something
> that's effectively the equivalent of:
>   % sync
>   [turn off the power supply]


since linux-2.4.21 the magic-sysrq's can be trigger via keyboard. 

echo s > /proc/sysrq-trigger 
echo u >/proc/sysrq-trigger 
echo o /proc/sysrq-trigger

takes less then a second to turn my system off.


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