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/2 Dec 10 06:04 1:59 bressler ubuntu:pts/1 Dec 9 16:40 11:41 dld centos6:pts/8 Dec 9 16:43 13:57 gb centos6:pts/5 Dec 10 07:37 :25 jal centos6:pts/21 Dec 10 07:54 :05 markjr ubuntu:pts/0 Dec 4 08:59 6:22 nanook centos6:pts/0 Dec 10 03:37 4:29 rhafner centos6:pts/7 Dec 10 06:14 1:47 rhom centos6:pts/3 Nov 29 02:49 25:02 richf centos6:pts/9 Dec 10 06:28 :19 saw centos6:pts/1 Dec 10 05:52 1:49 stosh debian:pts/0 Dec 1 10:20 :09 stosh debian:pts/3 Dec 9 06:57 16:43 wolf centos6:pts/14 Dec 10 06:46 1:20 wolf centos6:pts/4 Dec 10 06:06 :48 wolf centos6:pts/6 Dec 10 06:11 :02 xyzzx debian:pts/1 Dec 5 08:33 99:59