On Tue, Jul 12, 2011 at 9:47 AM, Bruce Dubbs <bruce.du...@gmail.com> wrote:
>
> Theodore You wrote:
> > The book says in chapter 7.3:
> > Links that start with an S in the rc0.d and rc6.d directories will
> > not cause anything to be started. They will be called with the
> > parameter stop to stop something.
> >
> > If so, why are there still scripts starting with an S in these two
> > directories?
> > Why not change all S to K?
>
> When changing to any run level, the rc script is run. It goes through
> the K entries with a stop. For runlevels 0 and 6, all the S entries are
> also run, in order, with a stop. For runlevels 1-5, The S entries are
> run with a start.
According to the rc script, if an S entry was started in previous
runlevel, and not stopped in current runlevel, it will be skipped, but
if we are switching to runlevel 0 or 6, this script won't be stopped.
Is this intended or I'm wrong?
>
> For runlevels 0 and 6, this lets us shut down in the order started (K
> entries) and then run the S entries, in order, to actually halt or
> restart the system.
If we want to change the order of these scripts, we can simply change
the number of the script, I still think there's no need for the S.
>
> -- Bruce
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