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/1 Aug 17 19:15 billb debian:pts/10 Aug 13 13:07 1:16 bressler ubuntu:pts/2 Aug 12 14:39 54:40 dld ubuntu:pts/6 Aug 17 18:00 1:20 dld ubuntu:pts/7 Aug 17 18:00 1:06 dld ubuntu:pts/9 Aug 17 18:03 1:16 jcp debian:pts/9 Aug 6 12:53 :48 luagha ubuntu:pts/8 Aug 17 09:06 3:56 mall-net ubuntu:pts/4 Aug 6 22:40 18:08 mall-net ubuntu:pts/5 Aug 13 01:44 :11 markjr ubuntu:pts/3 Aug 16 20:09 23:04 nanook ubuntu:pts/0 Aug 16 19:19 1:18 noelt debian:pts/11 Aug 17 16:53 2:08 rhafner centos7:pts/0 Aug 17 19:11 :09 scs debian:pts/12 Aug 17 07:32 1:22 seldon debian:pts/3 Aug 6 11:50 :13 seldon debian:pts/4 Aug 6 11:51 8:08 seldon debian:pts/5 Aug 6 11:51 8:07 seldon debian:pts/6 Aug 6 11:51 31:24 seldon debian:pts/7 Aug 6 12:13 22:15 seldon debian:pts/8 Aug 6 12:14 6:27 stosh debian:pts/1 Aug 6 07:33 :18 xyzzx debian:pts/0 Aug 11 11:35 12:36