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/0 Mar 24 17:06 33:53 dca ubuntu:pts/5 Mar 25 07:13 5:43 dld ubuntu:pts/2 Mar 24 14:43 6:34 dld ubuntu:pts/3 Mar 23 16:52 58:05 jcp centos7:pts/1 Mar 25 13:46 12:59 mall-net ubuntu:pts/4 Mar 25 01:00 2:24 mall-net ubuntu:pts/6 Mar 20 12:53 :36 nanook ubuntu:pts/1 Mar 25 02:42 :07 seldon debian:pts/0 Mar 19 02:23 7:08 seldon debian:pts/1 Mar 19 02:24 17:09 seldon debian:pts/2 Mar 19 02:24 7:08 seldon debian:pts/3 Mar 19 02:24 52:26 seldon debian:pts/4 Mar 19 02:24 7:08 seldon debian:pts/5 Mar 19 02:25 99:59 stosh debian:pts/7 Mar 19 08:23 5:27 xero debian:pts/11 Mar 19 21:13 99:59 xyzzx debian:pts/9 Mar 19 19:27 9:26