For users of linux and unix one command which is useful is uptime. The uptime command allows you to view the amount of time the server has been running since its last reboot or cold start. If you are administering a Windows machine there is no uptime command — however; this trick will give you a similar result!
I present “uptime” for Windows:
net statistics server
PS: to run this click on Start–>Run and enter CMD — hit enter and then type “net statistics server” into the MS-DOS emulated window and hit enter.