Uptime command gives a one line display that offers the following information -
- The current time,
- How long the system has been running,
- How many users are currently logged on, and
- The system load averages for the past 1, 5, and 15 minutes.
System load averages is the average number of processes that are either in a runnable or un-interruptable state.
When I ran the
uptimecommand on my Ubuntu machine, I got the following output.
$ uptime 08:25:48 up 1:21, 2 users, load average: 1.00, 1.01, 1.03
From the output, we can infer that the current time is 8:25 AM, the machine has been running continuously without a reboot for 1 hr and 21 minutes, and there are 2 users currently logged in to the system.
The load average for the past 1, 5 and 15 minutes is 1.00, 1.01, and 1.03 respectively.
Uptime is a simple command that offers useful information to the system administrator.