Comandos para verificar shutdown e reboot nas maquinas dos estados​

uptime - informa o tempo que a máquina está ligada
​
last -x|grep shutdown
shutdown system down  2.6.32-504.23.4. Tue Jul 28 10:38 - 10:39  (00:00)
shutdown system down  2.6.32-504.23.4. Tue Jul 28 10:22 - 10:22  (00:00)

-bash-4.1$ last reboot | head -1​
reboot   system boot  2.6.32-504.30.3. Mon Nov 23 08:11 - 11:35  (03:24)
-bash-4.1$ last reboot | head -10
reboot   system boot  2.6.32-504.30.3. Mon Nov 23 08:11 - 11:35  (03:24)
reboot   system boot  2.6.32-504.30.3. Wed Nov 18 09:38 - 11:35 (5+01:57)