Rwho
This shows who is logged in to our shell servers allowing you to locate someone to contact them in real time via facilities like ntalk.
bressler ubuntu:pts/1 May 1 17:14 58:39 jal zorin:pts/4 May 2 13:19 38:33 mall-net centos7:pts/0 May 4 01:47 1:48 mall-net centos7:pts/1 Apr 28 21:22 1:48 seldon debian:pts/0 Apr 7 03:41 2:01 seldon scientific7:pts/0 May 2 04:57 2:01 seldon zorin:pts/0 May 2 04:57 2:01 seldon zorin:pts/1 May 2 04:58 13:17 seldon zorin:pts/2 May 2 04:58 3:41 seldon zorin:pts/3 May 2 04:58 2:01 seldon zorin:pts/5 May 2 04:58 29:00 seldon zorin:pts/6 May 2 04:58 99:59 stosh debian:pts/1 Apr 7 06:39 16:15 stosh debian:pts/9 Apr 10 08:02 4:52