Once upon a time, Jos Vos <jos@(protected):
> What bash does:
> kill -0 <PIDS> succeeds if one or more of the pid parameters is valid
>
> I couldn't find a complete spec of what is correct/wrong in any formal
> UNIX spec till now.

SUSv3 says:

EXIT STATUS
  The following exit values shall be returned:

  0  At least one matching process was found for each pid operand,
 and the specified signal was successfully processed for at least
 one matching process.

  >0 An error occurred.

So it would seem bash is not following the standard. If even one PID is
invalid, it should be an error.
--
Chris Adams <cmadams@(protected)>
Systems and Network Administrator - HiWAAY Internet Services
I don't speak for anybody but myself - that's enough trouble.

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