Re: [PLUG] "services" under Linux

[Fred K Ollinger <follinge@sas.upenn.edu>]

> I think the S* are started all right but at shutdown

Yes, the S* are started in the rc# dir that the computer is in. If the
computer goes to rc5, then the S* are started.

> these same S*es are stopped (passed with "stop") argument.
> To disable services I just mv S* to K*.  I dont recall
> seeing a shutdown actually stopping the K*'s--i think
> they are just ignored.

This will disable the services, however, it's not the best way to do it.
As other suggested, use chkconfig. Otherwise, you are in for a lot of work
locating all the rc dirs, among other problems, typos, etc.

>From the RedHat manual:

"The init command first stops all the K symlinks in the directory by
issuing the /etc/rc.d/init.d command stop then it starts the S symlinks by
issuing /etc/rc.d/init.d command start."

Page 59,

http://www.redhat.com/docs/manuals/linux/RHL-8.0-Manual/pdf/rhl-rg-en-80.pdf

Other distros do this similarly, although instead of chkconfig, in debian
one will use update-rc.d.

Best bet is to explore these dirs, but like I said, let the tools make the
changes for you unless you really know what you are doing.

Fred

>
> e pike
>
> >
> > The Starting and Killing also happens when runlevels are changed.  In
> > fact, a shutdown is a switch to runlevel 0 and a reboot is a switch to
> > runlevel 6.  For example, if you're in runlevel three and change to
> > runlevel five (init 5) then...  Hey, I'm not sure if the K's in rc3.d
> > are killed, then the S's in rc5.d are started or what.  Hmm.  OK, how
> > does this work?
> >
> > Eugene Smiley wrote:
> >
> > >The S* scripts and also K* scripts tell init the order in which to initiate
> > >a particular service when the system is brought up (S*) or killed at
> > >shutdown (K*). The "services" without S* scripts are not started.
> > >
> > >
> >
> >
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