1、列出当前系统上所有已经登录的用户名,注意:同一个用户登录多次,则只显示一次即可。
[root@node2 ~]# who root pts/0 2016-10-08 13:28 (10.106.64.41)root pts/1 2016-10-08 13:44 (10.106.64.41)root pts/2 2016-10-08 14:22 (10.106.65.82)root pts/3 2016-10-08 14:22 (10.106.65.82)root pts/4 2016-10-08 15:26 (10.106.64.41)root pts/5 2016-10-08 15:26 (10.106.64.41)root pts/6 2016-10-08 15:26 (10.106.64.41)[root@node2 ~]# who -mroot pts/4 2016-10-08 15:26 (10.106.64.41)
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