RAK部落在一些生产平台或者做安全审计的时候往往看到一大堆的用户SSH连接到同一台服务器，或者连接后没有正常关闭进程还驻留在系统内，这就造成了很多不必要的问题。
如果登陆了许多不相干的用户，那么势必会使Linux系统内存严重不足，安全问题受到很大的威胁，所以限制SSH连接数与手动断开空闲连接也有必要之举，这里RAK部落写出手动剔除其他用户的过程。
1、查看系统在线用户
[root@testdb ~]# w
root pts/0 115.60.2.252 14:30 0.00s 0.07s 0.05s w
root pts/1 115.60.2.252 14:30 12.00s 0.01s 0.01s -bash
2.查看哪个属于此时自己的终端（我开了两个连接）
[root@testdb ~]# who am i
root pts/0 2013-12-31 14:30 (115.60.2.252)
3.pkill掉剔除自己不使用的终端
[root@testdb ~]# pkill -kill -t pts/1
4.查看当前终端情况
[root@testdb ~]# w
root pts/0 115.60.2.252 14:30 0.00s 0.04s 0.01s w
注意：
如果最后查看还是没有被剔除，可以加上-9 强制剔除。
[root@testdb ~]# pkill -9 -t pts/1
如若在操作之后还有类似问题时，RAK部落希望能够及时发现问题并解决，减少对系统造成的不必要的麻烦。
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