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linux文件存放目录详解

/etc  存放各种配置文件



  •    /etc/inittab   控制启动模式              

         [root@localhost ~]# 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/init/rcS.conf

    #

    # Individual runlevels are started by /etc/init/rc.conf

    #

    # Ctrl-Alt-Delete is handled by /etc/init/control-alt-delete.conf

    #

    # Terminal gettys are handled by /etc/init/tty.conf and /etc/init/serial.conf,

    # with configuration in /etc/sysconfig/init.

    #

    # For information on how to write upstart event handlers, or how

    # upstart works, see init(5), init(8), and initctl(8).

    #

    # Default runlevel. The runlevels used are:

    #   0 - halt (Do NOT set initdefault to this)(关机)

    #   1 - Single user mode (单用户模式)

    #   2 - Multiuser, without NFS (The same as 3, if you do not have networking) (多用户模式)

    #   3 - Full multiuser mode (命令行模式)

    #   4 - unused (没有使用)

    #   5 - X11  (桌面模式)

    #   6 - reboot (Do NOT set initdefault to this)(重启)

    id:3:initdefault:

  1. 查看运行级别

    [root@localhost ~]# runlevel

    N 3

  2. 不同模式切换

    init 数字

linux文件存放目录详解