TLDR
Enter a command. For example: bluetoothctl, colrm, service.

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

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