[Linux] 设置RHEL默认启动模式(图形界面、命令行）

曾经终败给现在 2023-06-13 06:20 31阅读 0赞

（1）RHEL6 改变默认启动模式，修改文件/etc/inittab 最后一行 “id:5:initdefault:” 中间的数字，reboot生效

[root@xxx ~]# 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)
    #   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:
    [root@xxx ~]#
    [root@xxx ~]#
    [root@xxx ~]# runlevel
    N 5
    [root@xxx ~]#

（2）RHEL7 改变默认启动模式

相比于RHEL6，RHEL7 的 /etc/inittab 文件中全是注释内容，没有最后一行的配置。查看默认启动模式可以用以下命令

\[root@xxx ~\]\# ***systemctl get-default***  
graphical.target   \-> 图形界面

如果想修改为命令行模式，执行命令 ***systemctl set-default** multi-user.target*  ，reboot生效。  
如果想立刻切换到命令行模式可执行 *init 3*。