[TUHS] Origin of 'kill -9'?

Steve Nickolas usotsuki at buric.co
Wed Nov 15 06:11:57 AEST 2017

On Tue, 14 Nov 2017, Ralph Corderoy wrote:

> Hi Dan,
>> Is the reason that SIGKILL has the numeric value 9
> If you look at signals 1 to 8 they could all be caught, etc.
> 9 was added so to thwart this and just took the next number AFAIK.
> Doesn't 9 have tie-ins to "death" in Japan?  ISTR some marketing
> avoiding it in version numbers.

I think 9 has ties to "pain", but the number that has connection to 
"death" in Japanese is 4 (四 shi, "four", which sounds like 死 shi, 


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