[CentOS] chkconfig question

[Larry Martell]

On Fri, Dec 13, 2013 at 5:21 PM,  <m.roth at 5-cent.us> wrote:
> Larry Martell wrote:
>> On Fri, Dec 13, 2013 at 5:04 PM, Reindl Harald <h.reindl at thelounge.net>
>> wrote:
>>> Am 13.12.2013 23:00, schrieb Larry Martell:
>>>> In the docs for chkconfig it says:
>>>> More commonly, the service is off by default on all runlevels, which
>>>> looks like this:
>>>>
>>>> # chkconfig: - 20 80
>>>>
>>>> But services with a chkconfig entry like that are started at boot time
>>>> (e.g. mysql, httpd). So when do they get started?
>>>
>>> when they are enabled with "chkconfig <service> on"
>>>
>>> look at /etc/rc0.d/ to /etc/rc6.d
>>> chkconfig finally creates symlinks there
>>
>> But at what run levels is my question.
>>
>> Looking at mysqd, it has:
>>
>> # chkconfig: - 64 36
>>
>> and I see a S64mysqld link in rc 2, 3, 4, and 5. Why in those 4 dirs?
>> Will all scripts with - in the chkconfig entry be started at those 4
>> levels? How is putting - different from putting 2345?
>
> Runlevel 0 is poweroff. 1 is single user/maintenance mode. 4, well, no one
> actually uses 4. And 6 is reboot. So, once the network's up, text mode and
> X-mode.

Thanks, but what was I wondering was what is the difference between
putting - and 2345 on the chkconfig entry.