linux下rc.d/目录文件以及程序开机自启动设置

[root@feiyinzilgd rc.d]# pwd 
/etc/rc.d

[root@feiyinzilgd rc.d]# ls 
init.d  rc0.d  rc2.d  rc4.d  rc6.d     rc.sysinit 
rc      rc1.d  rc3.d  rc5.d  rc.local 

[root@feiyinzilgd rc.d]# cat  /etc/inittab  
    # inittab is only used by upstart for the default runlevel. 
    # 
    # ADDING OTHER CONFIGURATION HERE WILL HAVE NO EFFECT ON YOUR SYSTEM. 
    # 
    # System initialization is started by /etc/event.d/rcS 
    # 
    # Individual runlevels are started by /etc/event.d/rc[0-6] 
    # 
    # Ctrl-Alt-Delete is handled by /etc/event.d/control-alt-delete 
    # 
    # Terminal gettys (tty[1-6]) are handled by /etc/event.d/tty[1-6] and 
    # /etc/event.d/serial 
    # 
    # For information on how to write upstart event handlers, or how 
    # upstart works, see init(8), initctl(8), and events(5). 
    # 
    # Default runlevel. The runlevels used are: 
    #   0 - halt (Do NOT set initdefault to this) 
    #   1 - Single user mode 
    #   2 - Multiuser, without NFS (The same as 3, if you do not have networking) 
    #   3 - Full multiuser mode 
    #   4 - unused 
    #   5 - X11 
    #   6 - reboot (Do NOT set initdefault to this) 
    #  
    id:5:initdefault: