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 ~]$ pkill -KILL -t /dev/pts/2 # 这种写法是错误的。因为在man page中明确说明,如果要使用-t参数,那么就不能带/dev/前辍。<span style="color:#FF99FF;"><span style="background-color: rgb(255, 255, 153);">#在centos6.7 kernel 3.10.28中测试,发现写完整的设备名并不起作用(如/dev/pts/2),本文是在kernel 2.6.32中写的,昨天晚上刚刚重启编译完3.10.28的内核,测试了一下又不可以了,郁闷。</span></span>
b)skill
- [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
- [wilsh@lcl ~]$ skill -9 -u wilsh
转自:https://blog.csdn.net/longyinyushi/article/details/49681621