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