chkconfig - enable or disable system services
chkconfig -t|--terse [names]
chkconfig -s|--set [name state]
chkconfig -e|--edit [names]
chkconfig -c|--check name [state]
chkconfig -l|--list [--deps] [names]
chkconfig -a|--add [names]
chkconfig -d|--del [names]
chkconfig is used to manipulate the runlevel links at boot time (see
init.d(7)). It can be thought of as a frontend to insserv(8).
Chkconfig can run in six different modes: terse list mode, set mode,
edit mode, list mode, add mode and delete mode. The last three modes
were added for compatiblity reasons.
TERSE LIST MODE
This mode lists the state of the specified services, or all known
services if no service name was provided. Every printed line consists
of the name of the service and the runlevels the service is configured
for at the moment. If it is configured in no runlevel, off is used
instead, if it is configured in the runlevels defined as a default by
the start script, on is used. If the service is an enabled inetd or
xinetd service, inetd and xinetd are used. Inetd/xinetd services are
configured in /etc/inetd.d and /etc/xinetd.d, respectively. You can use
the -A or --allservices parameter to get all services (even the
If chkconfig is called without arguments, all services are listed in
Set mode is used to configure at which runlevel a service should be
started. The arguments must be specified as pairs of service name and
new state. You can use on and off as special states to select the
default set of runlevels or to disable a service completely. You can
use inetd or xinetd to configure a service managed by the inetd/xinetd
If no services are specified, chkconfig reads lines from standard
input. Each line must consist of a service/state pair. As this is
exactly the output of the terse list mode, this can be used to
reconfigure a service specification saved by a former run.
If the option -f or --force is also given, insserv is called with a
This mode is a combination of the terse list mode and set mode. It
writes the state of all specified services (or all known services, if
no service was provided) into a temporary file, starts an editor and
re-configures all services to reflect the states of the changed
This mode can be used to check the state of a service. chkconfig exits
with a return code of ’0’ if the service is enabled in all of the
specified runlevels, otherwise the exit status is ’1’. If chkconfig is
called with only a service name the current runlevel of the system is
used for checking.
List mode prints for each specified service a line that consists of the
service name and for runlevels zero to six on or off depending if the
service will be started or not. on will be printed in bright green if
the output is written to a terminal. If the --deps option is given, the
names of the services that must be started before this service is
appended to each line. The inetd/xinetd services are listed in extra
You can use the -A or --allservices parameter to get all services (even
the boot.*-services) listed.
Calls insserv to enable a service and uses list mode to display the new
Same as add mode, but disable the service.
When no service names are given on the command line, chkconfig defaults
to all known services excluding those that are not enabled in runlevels
1 to 6 and start with ’boot.’. Use the --allservices or -A option if
you want to see such services as well.
list the runlevel configuration of all known services
list the runlevel configuration of the apache web server
chkconfig -t apache xntpd
list the runlevel configuration of the apache web server and the
network time protocol daemon.
chkconfig apache on
configure the apache web server to be started on next boot time.
chkconfig apache 5
configure the apache web server to be started only if the system
reaches runlevel 5.
chkconfig apache 35
configure the apache web server for runlevel 3 and 5.
chkconfig apache on xntpd off
configure two services
chkconfig finger xinetd
configure a xinetd service
chkconfig -A >~root/chkconfig.save
backup the current configuration
chkconfig -s <~root/chkconfig.save
restore the configuration
chkconfig -e apache xntpd
change the runlevel configuration interactively
change the runlevel configuration of all services interactively
path to the boot script base directory as required by the Linux
Standard Base Specification (LSB).
path to the inetd services. See the inetd manpage to find out
how to enable this feature.
path to the xinetd services.
init.d(7), init(7), inetd(8) xinetd(8) insserv(8)
2003 SuSE Linux AG, Nuernberg, Germany.
Michael Schroeder <email@example.com>