chkconfig

Manage the runlevel of services on CentOS 6. More information: https://manned.org/chkconfig.

• List services with runlevel:

chkconfig --list

• Show a service’s runlevel:

chkconfig --list ntpd

• Enable service at boot:

chkconfig sshd on

• Enable service at boot for runlevels 2, 3, 4, and 5:

chkconfig --level 2345 sshd on

• Disable service at boot:

chkconfig ntpd off

• Disable service at boot for runlevel 3:

chkconfig --level 3 ntpd off