centos 强制踢掉某登录用户

linux是一个多用户操作系统，用户可以在不同的地方链接上LINUX服务器，在系统中我们可以用w或者who来查看用户

[root@test ~]# who
root pts/0 2018-05-5 20:45 (58.63.138.162)
root pts/1 2018-05-5 22:24 (118.186.197.221)

[root@test ~]# w
22:33:29 up 4 days, 8:05, 2 users, load average: 1.58, 1.36, 1.47
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
root pts/0 58.63.138.162 20:45 0.00s 0.03s 0.00s w
root pts/1 118.186.197.221 22:24 4:40 0.02s 0.02s -bash

看看那个是自己登录得到

[root@test ~]# who am i 
root pts/0 2013-05-17 20:45 (58.63.138.162)
pkill,pts/1

接下来使用pkill踢掉用户

[root@test ~]# pkill -kill -t pts/1

接着用w或者who

[root@test ~]# w
22:40:43 up 4 days, 8:12, 1 user, load average: 1.58, 1.36, 1.40
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
root pts/0 58.63.138.162 20:45 0.00s 0.03s 0.00s w