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* [TUHS] Origin of 'kill -9'?
@ 2017-11-14 19:03 Dan Cross
  2017-11-14 20:07 ` Ralph Corderoy
  0 siblings, 1 reply; 9+ messages in thread
From: Dan Cross @ 2017-11-14 19:03 UTC (permalink / raw)


I am somewhat embarrassed to admit that this just occurred to me. Is the
reason that SIGKILL has the numeric value 9 because cats are reported to
have nine lives? Clearly the connection between 'cat' and 'kill -9' would
make for a irreverent but harmless inside joke if so....

        - Dan C.
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* [TUHS] Origin of 'kill -9'?
  2017-11-14 19:03 [TUHS] Origin of 'kill -9'? Dan Cross
@ 2017-11-14 20:07 ` Ralph Corderoy
  2017-11-14 20:11   ` Steve Nickolas
  0 siblings, 1 reply; 9+ messages in thread
From: Ralph Corderoy @ 2017-11-14 20:07 UTC (permalink / raw)


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.

-- 
Cheers, Ralph.
https://plus.google.com/+RalphCorderoy


^ permalink raw reply	[flat|nested] 9+ messages in thread

* [TUHS] Origin of 'kill -9'?
  2017-11-14 20:07 ` Ralph Corderoy
@ 2017-11-14 20:11   ` Steve Nickolas
  2017-11-14 22:35     ` Ralph Corderoy
  2017-11-15 21:52     ` Don Hopkins
  0 siblings, 2 replies; 9+ messages in thread
From: Steve Nickolas @ 2017-11-14 20:11 UTC (permalink / raw)


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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, 
"death").

-嘘.


^ permalink raw reply	[flat|nested] 9+ messages in thread

* [TUHS] Origin of 'kill -9'?
  2017-11-14 20:11   ` Steve Nickolas
@ 2017-11-14 22:35     ` Ralph Corderoy
  2017-11-15 21:52     ` Don Hopkins
  1 sibling, 0 replies; 9+ messages in thread
From: Ralph Corderoy @ 2017-11-14 22:35 UTC (permalink / raw)


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> > 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,
> "death").

Thanks, you're right, four.  Psion 3 didn't use 4 for their next model,
that's what I was thinking of.
https://en.wikipedia.org/wiki/Tetraphobia#Examples_of_sensitivity_to_tetraphobia_applied

-- 
Cheers, Ralph.
https://plus.google.com/+RalphCorderoy


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* [TUHS] Origin of 'kill -9'?
  2017-11-14 20:11   ` Steve Nickolas
  2017-11-14 22:35     ` Ralph Corderoy
@ 2017-11-15 21:52     ` Don Hopkins
  2017-11-15 22:51       ` Steffen Nurpmeso
  2017-11-16  6:00       ` Lars Brinkhoff
  1 sibling, 2 replies; 9+ messages in thread
From: Don Hopkins @ 2017-11-15 21:52 UTC (permalink / raw)


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> 
> 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, "death").
> 
> -嘘.

9 means “no” in German.

-Don



^ permalink raw reply	[flat|nested] 9+ messages in thread

* [TUHS] Origin of 'kill -9'?
  2017-11-15 21:52     ` Don Hopkins
@ 2017-11-15 22:51       ` Steffen Nurpmeso
  2017-11-15 23:01         ` Steve Simon
  2017-11-16  6:00       ` Lars Brinkhoff
  1 sibling, 1 reply; 9+ messages in thread
From: Steffen Nurpmeso @ 2017-11-15 22:51 UTC (permalink / raw)


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Don Hopkins <don at DonHopkins.com> wrote:
 |> 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, "death").
 |> 
 |> -嘘.
 |
 |9 means “no” in German.

I wonder whether Plan9 used to be translated as plan-no, then.
Nine while nine (...waiting for the train).

--steffen
|
|Der Kragenbaer,                The moon bear,
|der holt sich munter           he cheerfully and one by one
|einen nach dem anderen runter  wa.ks himself off
|(By Robert Gernhardt)


^ permalink raw reply	[flat|nested] 9+ messages in thread

* [TUHS] Origin of 'kill -9'?
  2017-11-15 22:51       ` Steffen Nurpmeso
@ 2017-11-15 23:01         ` Steve Simon
  0 siblings, 0 replies; 9+ messages in thread
From: Steve Simon @ 2017-11-15 23:01 UTC (permalink / raw)


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I don’t agree the train was later, 
 "The one after nine oh nine” :-)

-Steve


> On 15 Nov 2017, at 22:51, Steffen Nurpmeso <steffen at sdaoden.eu> wrote:
> 
> Don Hopkins <don at DonHopkins.com> wrote:
> |> 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, "death").
> |> 
> |> -嘘.
> |
> |9 means “no” in German.
> 
> I wonder whether Plan9 used to be translated as plan-no, then.
> Nine while nine (...waiting for the train).
> 
> --steffen
> |
> |Der Kragenbaer,                The moon bear,
> |der holt sich munter           he cheerfully and one by one
> |einen nach dem anderen runter  wa.ks himself off
> |(By Robert Gernhardt)



^ permalink raw reply	[flat|nested] 9+ messages in thread

* [TUHS] Origin of 'kill -9'?
  2017-11-15 21:52     ` Don Hopkins
  2017-11-15 22:51       ` Steffen Nurpmeso
@ 2017-11-16  6:00       ` Lars Brinkhoff
  2017-11-16  6:03         ` Warner Losh
  1 sibling, 1 reply; 9+ messages in thread
From: Lars Brinkhoff @ 2017-11-16  6:00 UTC (permalink / raw)


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Don Hopkins wrote:
> 9 means “no” in German.

Isn't it nine = neun, but no = nein?


^ permalink raw reply	[flat|nested] 9+ messages in thread

* [TUHS] Origin of 'kill -9'?
  2017-11-16  6:00       ` Lars Brinkhoff
@ 2017-11-16  6:03         ` Warner Losh
  0 siblings, 0 replies; 9+ messages in thread
From: Warner Losh @ 2017-11-16  6:03 UTC (permalink / raw)


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On Wed, Nov 15, 2017 at 11:00 PM, Lars Brinkhoff <lars at nocrew.org> wrote:

> Don Hopkins wrote:
> > 9 means “no” in German.
>
> Isn't it nine = neun, but no = nein?
>

Yes. But this is more of a pun. English 9 (nine) == German No (nein). Kinda
like Oct 31 == Dec 25...

Warner
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Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-11-14 19:03 [TUHS] Origin of 'kill -9'? Dan Cross
2017-11-14 20:07 ` Ralph Corderoy
2017-11-14 20:11   ` Steve Nickolas
2017-11-14 22:35     ` Ralph Corderoy
2017-11-15 21:52     ` Don Hopkins
2017-11-15 22:51       ` Steffen Nurpmeso
2017-11-15 23:01         ` Steve Simon
2017-11-16  6:00       ` Lars Brinkhoff
2017-11-16  6:03         ` Warner Losh

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