The chkconfig command can also be used to activate and
deactivate services. If you use the chkconfig --list
command, you will see a list of system services and whether they are started
(on) or stopped (off) in runlevels
0-6 (at the end of the list, you will see a section for the services managed
by xinetd, which we'll discuss later in this section).
If you use chkconfig --list to query a service managed
by xinetd, you will see whether the
xinetd service is enabled (on) or disabled (off). For
example, the following command shows that finger is
enabled as an xinetd service:
$ chkconfig --list finger
finger on |
As shown above, if xinetd is running,
finger is enabled.
If you use chkconfig --list to query a service in
/etc/rc.d, you will see the service's settings for each
runlevel, like the following:
$ chkconfig --list anacron
anacron 0:off 1:off 2:on 3:on 4:on 5:on 6:off |
More importantly, chkconfig can be used to set a
service to be started (or not) in a specific runlevel. For example, if we
wanted to turn nscd off in runlevels 3, 4, and 5, we'd
use a command like this:
chkconfig --level 345 nscd off |
See the chkconfig man page for more information on how
to use it.
 | Warning |
|---|
| | Changes do not take effect immediately after using
chkconfig. You must stop or start the
individual service with the command service
daemon stop. In the previous
example, replace daemon with the name of the
service you want to stop; for example, httpd.
Replace stop with start or
restart to start or restart the service. If you want
to start or stop a service which is managed by
xinetd, use the command service xinetd
restart.
|
