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.
billb debian:pts/5 Apr 19 15:30 11:14 billb debian:pts/6 Apr 19 14:16 11:04 bressler ubuntu:pts/4 Apr 14 03:27 99:59 ethauvin ubuntu:pts/5 Apr 12 12:16 52:23 ethauvin ubuntu:pts/7 Apr 20 02:36 14:35 jal zorin:pts/4 Apr 19 10:36 16:19 mall-net centos7:pts/3 Apr 14 17:36 5:20 mall-net ubuntu:pts/6 Apr 19 00:01 14:22 markjr ubuntu:pts/1 Apr 18 16:45 15:37 nanook radius:pts/0 Apr 9 21:27 34:59 nanook radius:pts/1 Apr 15 01:23 28:56 nanook ubuntu:pts/0 Apr 18 04:25 :14 noelt debian:pts/4 Apr 19 18:01 8:12 seldon debian:pts/0 Apr 7 03:41 13:08 seldon scientific7:pts/0 Apr 18 00:57 13:06 seldon zorin:pts/0 Apr 18 00:57 13:05 seldon zorin:pts/1 Apr 18 00:57 64:46 seldon zorin:pts/2 Apr 18 00:57 22:53 seldon zorin:pts/3 Apr 18 00:57 13:05 seldon zorin:pts/5 Apr 18 00:57 23:29 seldon zorin:pts/6 Apr 18 00:57 99:59 stosh debian:pts/1 Apr 7 06:39 5:43 stosh debian:pts/9 Apr 10 08:02 6:03 xyzzx debian:pts/10 Apr 11 13:28 99:59