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.
bbrace ubuntu:pts/6 May 12 08:04 10:13 bressler debian:pts/2 May 11 17:17 24:57 dca ubuntu:pts/2 May 12 07:39 :01 ethauvin ubuntu:pts/3 May 8 09:32 99:59 ethauvin ubuntu:pts/4 May 11 09:16 33:00 ethauvin ubuntu:pts/5 May 12 14:04 33:00 jal zorin:pts/4 May 9 09:56 32:32 jal zorin:pts/8 May 12 03:59 14:01 luagha ubuntu:pts/1 May 12 05:04 :12 mall-net centos7:pts/1 Apr 28 21:22 :02 markjr ubuntu:pts/7 May 12 12:59 :59 nanook radius:pts/1 May 9 16:32 4:07 nanook ubuntu:pts/0 May 9 16:33 1:39 noelt debian:pts/4 May 12 15:16 2:46 rhafner centos7:pts/0 May 12 18:13 seldon debian:pts/0 Apr 7 03:41 3:02 seldon scientific7:pts/0 May 2 04:57 2:54 seldon zorin:pts/0 May 2 04:57 2:53 seldon zorin:pts/1 May 2 04:58 6:35 seldon zorin:pts/2 May 2 04:58 2:53 seldon zorin:pts/3 May 2 04:58 3:02 seldon zorin:pts/5 May 2 04:58 77:41 seldon zorin:pts/6 May 2 04:58 99:59 stosh debian:pts/1 Apr 7 06:39 21:22 stosh debian:pts/9 Apr 10 08:02 1:08 xyzzx debian:pts/3 May 11 12:14 30:01