s
12.当运行在多用户模式下时，用Ctrl+ALT+F*可以切换多少虚拟用户终端()
A.3 B.6 C.1 D.12
答案 Ctrl+Alt+F1、、、F6
linux下如何踢掉其他用户
https://www.cnblogs.com/fbwfbi/archive/2013/05/06/3063331.html
查看机器中登陆的用户
[root@chengest~]# w
16:29:02 up 2 days, 2:35, 5 users, load average: 0.03, 0.05, 0.01
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
root pts/1 :0.0 Tue15 2days 1:44 0.04s -bash
root pts/2 :0.0 Tue15 46:42m 0.05s 0.05s bash
root pts/3 :0.0 Tue15 2days 0.02s 0.02s bash
root pts/4 172.20.52.114 14:17 58:48 0.16s 0.03s sqlplus
root pts/5 172.20.52.114 15:31 0.00s 0.03s 0.00s w
我把pts/1踢掉（只有root才能去踢掉用户）
[root@chengest ~]# pkill -kill -t pts/1
[root@chengest ~]# pkill -kill -t pts/2
[root@chengest ~]# pkill -kill -t pts/3
查看是不是踢掉
[root@chengest ~]# w
16:34:16 up 2 days, 2:40, 2 users, load average: 0.00, 0.05, 0.02
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
root pts/4 172.20.52.114 14:17 1:04m 0.16s 0.03s sqlplus
root pts/5 172.20.52.114 15:31 0.00s 0.03s 0.00s w
root可以踢掉其他用户包括自己
案例2
[root@centos8 ~]# w
16:06:35 up 37 min, 6 users, load average: 0.00, 0.08, 0.07
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
root pts/0 10.48.69.80 15:34 2.00s 0.04s 0.00s w
test tty2 tty2 16:00 37:41 7.37s 0.01s /usr/libexec/gsd-disk-utility-notify
jbossuse tty3 - 16:01 5:12 0.02s 0.02s -bash
test tty4 - 16:02 3:54 0.02s 0.02s -bash
test tty5 - 16:02 3:46 0.02s 0.02s -bash
test tty6 - 16:02 3:30 0.02s 0.02s -bash
剔除桌面登陆用户
[root@centos8 ~]# pkill -kill -t tty2
[root@centos8 ~]# pkill -kill -t tty3
[root@centos8 ~]# pkill -kill -t tty4
[root@centos8 ~]# pkill -kill -t tty5
[root@centos8 ~]# pkill -kill -t tty6
查看剔除用户结果
[root@centos8 ~]# w
16:15:19 up 46 min, 2 users, load average: 0.23, 0.06, 0.04
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
root pts/0 10.48.69.80 15:34 1.00s 0.04s 0.00s w
end
[root@centos8 ~]# pkill -kill -t tty3