Ruptime
This gives you the uptime and system load of shell servers.
debian up 7+00:39, 3 users, load 0.17, 0.11, 0.09 fedora up 2+06:34, 0 users, load 0.82, 0.84, 0.95 ftp up 7+00:38, 0 users, load 0.36, 0.86, 0.88 manjaro up 6+06:10, 0 users, load 1.00, 1.02, 1.05 mint up 7+00:39, 2 users, load 0.06, 0.06, 0.05 popos up 7+00:35, 0 users, load 0.09, 0.12, 0.09 radius up 6+23:34, 2 users, load 0.13, 0.11, 0.07 rocky8 up 7+00:34, 0 users, load 0.15, 0.04, 0.01 ubuntu up 7+00:39, 3 users, load 0.08, 0.09, 0.37 zorin up 7+00:38, 1 user, load 0.05, 0.05, 0.05