Linux Administration: to add a linux service to boot time

Here is the command:

chkconfig --level 2345 portmap on

Reference Link:

http://www.centos.org/docs/5/html/Deployment_Guide-en-US/s1-services-chkconfig.html

Run Level Reference Link:

http://en.wikipedia.org/wiki/Runlevel

http://www.skullbox.net/init.php