On Tue, Apr 10, 2001 at 11:20:24PM +0000, Miquel van Smoorenburg wrote:
>
> the shutdown scripts
> include "kill -15 -1; sleep 2; kill -9 -1". The "-1" means
> "all processes except me". That means init will get hit with
> SIGTERM occasionally during shutdown, and that might cause
> weird things to happen.
-1 mean everything but init.
>From the manpage:
If pid equals -1, then sig is sent to every process except
for the first one, from higher numbers in the process
table to lower.
And later:
BUGS
It is impossible to send a signal to task number one, the
init process, for which it has not installed a signal han-
dler. This is done to assure the system is not brought
down accidentally.
Kurt
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