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Uptime

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The above shows that, at 2:49pm (when the command was run), the system in question had been running for 239 days and 30 minutes.  It also had two users logged on.  The three load averages values show the system utilisation as at 1, 5 and 15 minutes ago respectively.
 
The above shows that, at 2:49pm (when the command was run), the system in question had been running for 239 days and 30 minutes.  It also had two users logged on.  The three load averages values show the system utilisation as at 1, 5 and 15 minutes ago respectively.
  
Note that some UNIX and Unix-like systems have a 'roll over' at 497 days where the counter it reset to zero.  This means a system with 498 days of uptime will report 0 days and so on, for each 498th day.
+
Note: FreeBSD does not have an "uptime reset" issue such as most Linux and other unixlike OSes do.
  
 
See also [[w]] command.
 
See also [[w]] command.
  
 
[[Category:System Commands]]
 
[[Category:System Commands]]

Revision as of 12:18, 4 October 2007

The uptime command shows the length of time since the system booted up. The output is displayed on the standard output.

break# uptime
2:49PM  up 229 days, 30 mins, 2 users, load averages: 0.00, 0.00, 0.00

The above shows that, at 2:49pm (when the command was run), the system in question had been running for 239 days and 30 minutes. It also had two users logged on. The three load averages values show the system utilisation as at 1, 5 and 15 minutes ago respectively.

Note: FreeBSD does not have an "uptime reset" issue such as most Linux and other unixlike OSes do.

See also w command.

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