1、用w命令查看当前系统登录的用户
[[email protected] ~]# w 02:48:04 up 4:35, 3 users, load average: 0.00, 0.01, 0.05 USER TTY FROM [email protected] IDLE JCPU PCPU WHAT root pts/0 192.168.1.100 02:26 4.00s 0.06s 0.02s w lxj2 pts/1 192.168.1.100 02:47 58.00s 0.00s 0.00s -bash rusky pts/2 192.168.1.100 02:47 5.00s 0.01s 0.01s -bash [[email protected] ~]#
USER —登录的用户名
TTY —登录后系统分配的终端号
FROM—远程主机名，即从哪儿登录来的
[email protected]—何时登录
IDLE—空闲了多长时间，表示用户闲置的时间。这是一个计时器，一旦用户执行任何操作，该计时器便会被重置
JCPU—和该终端（tty）连接的所有进程占用的时间，这个时间里并不包括过去的后台作业时间，但却包括当前正在运行的后台作业所占用的时间
PCPU—指当前进程（即在WHAT项中显示的进程）所占用的时间
WHAT—当前正在运行进程的命令行
2、使用ps -u username命令查看用户进程，然后kill掉对应用户的sshd进程
[[email protected] ~]# ps -u lxj2 PID TTY TIME CMD 3143 ? 00:00:00 sshd 3144 pts/1 00:00:00 bash [[email protected] ~]# kill -9 3143 [[email protected] ~]# ps -u lxj2 PID TTY TIME CMD [[email protected] ~]# w 04:10:25 up 5:57, 2 users, load average: 0.00, 0.01, 0.05 USER TTY FROM [email protected] IDLE JCPU PCPU WHAT root pts/0 192.168.1.100 02:26 1.00s 0.17s 0.00s w rusky pts/2 192.168.1.100 03:03 1:07m 0.00s 0.00s -bash [[email protected] ~]#
3、还有另外一种方式是使用pkill命令终止用户连接
[[email protected] ~]# w 06:48:22 up 8:35, 3 users, load average: 0.00, 0.01, 0.05 USER TTY FROM [email protected] IDLE JCPU PCPU WHAT root pts/0 192.168.1.100 02:26 6.00s 0.18s 0.01s w lxj2 pts/1 192.168.1.100 06:48 3.00s 0.02s 0.02s -bash rusky pts/2 192.168.1.100 03:03 3:45m 0.00s 0.00s -bash [[email protected] ~]# pkill -kill -t pts/1 [[email protected] ~]# w 06:49:04 up 8:36, 2 users, load average: 0.00, 0.01, 0.05 USER TTY FROM [email protected] IDLE JCPU PCPU WHAT root pts/0 192.168.1.100 02:26 0.00s 0.18s 0.00s w rusky pts/2 192.168.1.100 03:03 3:46m 0.00s 0.00s -bash [[email protected] ~]# pkill -kill -t pts/2 [[email protected] ~]# w 06:49:18 up 8:36, 1 user, load average: 0.00, 0.01, 0.05 USER TTY FROM [email protected] IDLE JCPU PCPU WHAT root pts/0 192.168.1.100 02:26 6.00s 0.19s 0.01s w [[email protected] ~]#
时间： 2024-12-10 21:27:22