RUNLEVEL SERVICE MANAGEMENT TOOLS
Features:
1. The ability to indicate desired runlevels for services
2. Services are located in: /etc/init.d
/usr/sbin/ntsysv:
Usage:
•ntsysv - manages services in the current run-level
•ntsysv 35 - manages services for run-levels 3 & 5
Note: ntsysv nor chkconfig starts|stops services
Chkconfig Usage:
1. chkconfig --list ntpd - returns run-level environment for 'ntpd'
Note:
•items listed as 'off' have K (kill) scripts
•items listed as 'on' have S (start) scripts
2. chkconfig --level 3 ntpd off - creates a K(kill) script in run-level 3
3. chkconfig --level 35 ntpd off
4. chkconfig ntpd on - enables 'ntpd' in levels 2-5
5. chkconfig ntpd off - disables 'ntpd' in levels 0-6
Note:
•Use 'chkconfig' from the shell or a script
•Use 'ntsysv' from the shell in interactive mode
•When controlling services using ‘chkconfig’, reference the name of the service as it’s specified in: /etc/init.d
GUI Tools:
•system-config-services