chkconfig — Update/Show runlevel information for system services.Summary: ‘chkconfig’ provides a simple command-line tool for maintaining the /etc/rc[0-6].d directory hierarchy by relieving system administrators of the task of directly manipulating the numerous symbolic links in those directories. A runlevel is a software configuration of the system which allows only a selected group of processes to exist (man init). Examples:
$ chkconfig --list -- List runlevel info for all system services. $ chkconfig --list xinetd -- List runlevel info of xinetd service. # chkconfig --add newser -- Add a new service for management. # chkconfig --del oldser -- Remove this services symbolic links from all rc[0-6].d Dirs. # chkconfig --level 35 xinetd on -- Start the xinetd service only in runlevel 3 and 5.
Read: man chkconfig