先用who命令查看所有登陆终端
#who -uH
输出如下:
NAME LINE TIME IDLE PID COMMENT
root :0 2010-03-01 19:13 ? 2436
root pts/0 2010-03-01 19:13 06:44 2851 (:0)
root pts/1 2010-03-02 00:52 00:03 29584 (:0)
root pts/2 2010-03-02 01:26 00:19 23321 (:0)
root pts/3 2010-03-02 01:42 . 26511 (192.168.79.1)
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