Ruptime

This gives you the uptime and system load of shell servers.

centos6 up 1+01:37, 1 user, load 0.20, 0.10, 0.09
centos7 up 1+01:16, 0 users, load 0.07, 0.03, 0.00
debian up 1+01:25, 1 user, load 0.11, 0.08, 0.12
eskimo up 20+02:53, 1 user, load 0.00, 0.00, 0.00
fedora up 1+01:19, 0 users, load 0.00, 0.10, 0.25
ftp up 1+02:31, 0 users, load 1.64, 2.42, 2.41
mint down 18+23:53
mxlinux up 1+00:52, 0 users, load 0.52, 0.79, 0.64
scientific up 5+16:58, 0 users, load 0.11, 0.03, 0.01
scientific7 up 5+17:31, 0 users, load 0.04, 0.11, 0.10
ubuntu up 1+02:07, 0 users, load 0.22, 0.13, 0.03