1、查看当前登录用户
[wilsh@lcl ~]$ whatis w
w (1) – Show who is logged on and what they are doing
[wilsh@lcl ~]$ w
09:49:30 up 1 day, 17:19, 4 users, load average: 0.00, 0.00, 0.00
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
root tty3 – 09:25 23:25 0.10s 0.08s -bash
root pts/0 192.168.105.188 09:32 9:38 0.02s 0.02s -bash
root pts/1 192.168.105.188 09:36 9:32 0.03s 0.02s -bash
wilsh pts/2 192.168.105.188 09:41 0.00s 0.00s 0.00s w
2、踢出当前在线的用户
a)pkill
[wilsh@lcl ~]$ whatis pkill
pkill [pgrep] (1) – look up or signal processes based on name and other
attributes
[wilsh@lcl ~]$ pkill -KILL -u wilsh #-u用来指定用户名
[wilsh@lcl ~]$ pkill -9 -u wilsh # -KILL -9都是可以的。
[wilsh@lcl ~]$ pkill -KILL -t pts/2
[wilsh@lcl ~]$ whatis skill
skill
(1) – send a signal or report process status
[wilsh@lcl ~]$ skill -9 -t pts/2
[wilsh@lcl ~]$ w
09:57:37 up 1 day, 17:28, 4 users, load average: 0.00, 0.00, 0.00
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
root tty3 – 09:25 31:32 0.10s 0.08s -bash
root pts/0 192.168.105.188 09:32 17:45 0.02s 0.02s -bash
root pts/1 192.168.105.188 09:36 17:39 0.01s 0.01s -bash
wilsh pts/2 192.168.105.188 09:57 0.00s 0.00s 0.00s w