[CentOS] starting/stopping services

Fri Nov 1 19:49:34 UTC 2013
Wes James <comptekki at gmail.com>

On Fri, Nov 1, 2013 at 1:33 PM, Les Mikesell <lesmikesell at gmail.com> wrote:

> On Fri, Nov 1, 2013 at 2:18 PM, Wes James <comptekki at gmail.com> wrote:
> > In an earlier thread it was mentioned I could use postfix stop to stop
> > postfix.  I'm trying to get sshd started and starting on boot.  I did
> > chkconfig sshd on and that worked fine, but then tried sshd start, but
> that
> > didn't work.  It looks like I need to do service sshd start (I did just
> > that and it is now started).  Why the difference?
> 'chkconfig' uses comments in the script in /etc/rc.d/init.d/ as hints
> to make the symlinks in the runlevel directories (/etc/rc.d/rc1.d,
> etc.) for you and some other convenience operations.    The runlevel
> directories control what happens at startup and shutdown - based on
> your default runlevel set in /etc/inittab.
> 'service'  executes the script immediately with the argument you
> provide.  If you look at the contents of the script you can see what
> it does with each argument (stop/start/restart are always handled,
> other arguments may be).
> --
>    Les Mikesell
>       lesmikesell at gmail.com

Thanks.  But why do some commands require service service-name command
(like sshd) where postfix works without the service command in front of it?