chkconfig command is default command for linux versions.
chkconfig command is basically used for what is status when machine is rebooting. Startup of machine which services get started automatically.
For listing for services:
#su
#ROOT-PASSWORD
#chkconfig –list
If you want to add any service at startup:
# chkconfig –add nginx
If you want to turn on any service at startup:
#chkconfig nginx on
Stopping service
#chkconfig mysql off
My Code Book 
please send me more commands codes please
Which commands you want..tell me specifically
How to add own script in chkconfig? If this script not shows by ‘chkconfig –list’?
for that you need some knowledge for shell script for adding the program to chkconfig list
What about aiccu ? I have it on every init on, but it doesn’t start on bootup I have to login open a terminal window and type init 5 for example to start it what could be the problem ?