Chkconfig; Additional Resources - Red Hat ENTERPRISE LINUX 4 System Administration Manual

Chapter 19. Controlling Access to Services
the Tab key. A * signifies that a service is set to on. Pressing the F1 key displays a short description of
the selected service.
Warning
Services managed by xinetd are immediately affected by ntsysv. For all other services,
changes do not take effect immediately. 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.

19.5. chkconfig

The chkconfig command can also be used to activate and deactivate services. The chkconfig --
list command displays a list of system services and whether they are started (on) or stopped (off)
in runlevels 0-6. At the end of the list is a section for the services managed by xinetd.
If the chkconfig --list command is used to query a service managed by xinetd, it displays
whether the xinetd service is enabled (on) or disabled (off). For example, the command
chkconfig --list finger returns the following output:
finger on
As shown, finger is enabled as an xinetd service. If xinetd is running, finger is enabled.
If you use chkconfig --list to query a service in /etc/rc.d, service's settings for each runlevel
are displayed. For example, the command chkconfig --list httpd returns the following output:
httpd 0:off
chkconfig can also be used to configure a service to be started (or not) in a specific runlevel. For
example, to turn nscd off in runlevels 3, 4, and 5, use the following command:
chkconfig --level 345 nscd off
Warning
Services managed by xinetd are immediately affected by chkconfig. For example,
if xinetd is running, finger is disabled, and the command chkconfig finger on
is executed, finger is immediately enabled without having to restart xinetd manually.
Changes for other services 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.

19.6. Additional Resources

For more information, refer to the following resources.
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1:off 2:on 3:on 4:on 5:on 6:off