CHKCONFIG(8)						      System Manager's Manual						      CHKCONFIG(8)

NAME

       chkconfig - updates and queries runlevel information for system services

SYNOPSIS

       chkconfig --list [name]
       chkconfig --add name
       chkconfig --del name
       chkconfig [--level levels] name <on|off|reset>
       chkconfig [--level levels] name

DESCRIPTION

       chkconfig  provides a simple command-line tool for maintaining the /etc/rc[0-6].d directory hierarchy by relieving system administrators of
       the task of directly manipulating the numerous symbolic links in those directories.

       This implementation of chkconfig was inspired by the chkconfig command present in the IRIX operating system. Rather than  maintaining  con-
       figuration information outside of the /etc/rc[0-6].d hierarchy, however, this version directly manages the symlinks in /etc/rc[0-6].d. This
       leaves all of the configuration information regarding what services init starts in a single location.

       chkconfig has five distinct functions: adding new services for management, removing services from management, listing the  current  startup
       information for services, changing the startup information for services, and checking the startup state of a particular service.

       When chkconfig is run without any options, it displays usage information.  If only a service name is given, it checks to see if the service
       is configured to be started in the current runlevel. If it is, chkconfig returns true; otherwise it returns false. The --level  option  may
       be used to have chkconfig query an alternative runlevel rather than the current one.

       If  one of on, off, or reset is specified after the service name, chkconfig changes the startup information for the specified service.  The
       on and off flags cause the service to be started or stopped, respectively, in the runlevels being  changed.   The  reset  flag  resets  the
       startup information for the service to whatever is specified in the init script in question.

       By  default, the on and off options affect only runlevels 2, 3, 4, and 5, while reset affects all of the runlevels.  The --level option may
       be used to specify which runlevels are affected.

       Note that for every service, each runlevel has either a start script or a stop script.  When switching runlevels, init will not re-start an
       already-started service, and will not re-stop a service that is not running.

OPTIONS

       --level levels
	      Specifies  the  run  levels  an operation should pertain to. It is given as a string of numbers from 0 to 7. For example, --level 35
	      specifies runlevels 3 and 5.

       --add name

	      This option adds a new service for management by chkconfig.  When a new service is added, chkconfig ensures  that  the  service  has
	      either  a start or a kill entry in every runlevel. If any runlevel is missing such an entry, chkconfig creates the appropriate entry
	      as specified by the default values in the init script. Note that default entries in LSB-delimited 'INIT INFO' sections  take  prece-
	      dence over the default runlevels in the initscript.

       --del name
	      The service is removed from chkconfig management, and any symbolic links in /etc/rc[0-6].d which pertain to it are removed.

       --list name
	      This option lists all of the services which chkconfig knows about, and whether they are stopped or started in each runlevel. If name
	      is specified, information in only display about service name.

RUNLEVEL FILES

       Each service which should be manageable by chkconfig needs two or more commented lines added to its init.d script.  The	first  line  tells
       chkconfig  what runlevels the service should be started in by default, as well as the start and stop priority levels. If the service should
       not, by default, be started in any runlevels, a - should be used in place of the runlevels list.  The second line  contains  a  description
       for the service, and may be extended across multiple lines with backslash continuation.

       For example, random.init has these three lines:
       # chkconfig: 2345 20 80
       # description: Saves and restores system entropy pool for 
       #	      higher quality random number generation.
       This says that the random script should be started in levels 2, 3, 4, and 5, that its start priority should be 20, and that its stop prior-
       ity should be 80.  You should be able to figure out what the description says; the  causes the line to be continued.  The extra  space	in
       front of the line is ignored.

SEE ALSO

       init(8) ntsysv(8) serviceconf(8)

AUTHOR

       Erik Troan <ewt@redhat.com>

4th Berkeley Distribution					  Wed Oct 8 1997						      CHKCONFIG(8)