Ruptime
This gives you the uptime and system load of shell servers.
centos7 down 25+23:45 debian up 8+19:29, 2 users, load 0.20, 0.13, 0.09 fedora up 7+00:55, 0 users, load 0.02, 0.06, 0.08 ftp up 8+19:31, 0 users, load 0.59, 0.68, 0.71 mint up 8+18:55, 1 user, load 0.04, 0.07, 0.06 popos up 7+22:04, 0 users, load 0.04, 0.05, 0.06 radius up 7+21:52, 2 users, load 0.15, 0.10, 0.08 rocky8 up 7+22:04, 0 users, load 0.00, 0.00, 0.00 scientific7 down 25+23:46 ubuntu up 8+16:46, 6 users, load 2.74, 2.72, 2.63 zorin up 8+19:29, 0 users, load 0.02, 0.05, 0.02