Where does chkconfig store its settings?

[David G. Miller]

Eric <spamsink at scoot.netis.com> wrote:

> Where do chkconfig and system-config-services store their settings?
>
> I checked the man pages and Google and no luck, then tried making a change 
> to chkconfig and running "find / -mmin 10", and nothing obvious showed up.
There isn't a separate copy.  Settings from chkconfig and 
system-config-services are implemented as links from /etc/rc.d/rcX.d (0 
<= X <= 6) to the actual control scripts in /etc/init.d.  You turn on a 
service in a particular run level and a "S" (S for start) link gets 
created from the rcX.d directory for that run level to the script in 
/etc/init.d.  When you turn off a service the "S" link gets removed.  
When you change run levels (e.g., level 2 to level 3) the stop scripts 
for anything that isn't supposed to run in level 3 get executed and then 
start scripts for the new things that define level 3 get executed.  The 
scripts are executed in collation order by name so all of the links in 
each rcX.d directory are of the form Snn<serviceName> or 
Knn<serviceName> with services to be started (or stopped) sooner having 
a lower number.

Services that run through xinetd.d don't get the fine-grained control 
since xinetd is either on or off for a particular run level and services 
that run through it (e.g., amanda client, telnet server, etc.) are 
either disabled or enabled.  You either get all of the enabled xinetd 
services in a particular run level or none of them.

Cheers,
Dave

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