Linux: uptime command

A scheduled process stopped running. I wondered if perhaps the server had been shut down. Turns out there is a Linux command to check that: uptime.

   [xcnb804@omhq1845 scripts]$ uptime
    08:51:35 up 27 days, 38 min,  4 users,  load average: 0.06, 0.10, 0.37
   [xcnb804@omhq1845 scripts]$

About the command: http://linux.about.com/library/cmd/blcmdl1_uptime.htm

Unfortunately, server had not been shut down, so I still don't know the root cause of my problem....