Simple, just run the “uptime” command and you will be rewarded with the answer plus a bit more.
8:58pm up 19:54, 1 user, load average: 0.47, 0.62, 0.35
Above is the typical reply from uptime. On the left is the current time, followed by the system’s uptime, logged in users and finally the system’s load average.
Sample output;
danesh@pandora:~> uptime
8:58pm up 19:54, 1 user, load average: 0.47, 0.62, 0.35