uptime is used to check how long your computer has been on since the last reboot. This is useful for the user as it allows the user to determine whether a restart or shut down is necessary for the computer.

$ uptime
11:31 up 1 day, 1:22, 2 users, load averages 1.97 2.04 2.14

Useful Options / Examples

‘uptime’ gives a one line display for each of the following

The current time:


How long the system has been running:

1 day, 1:22

How many users are currently logged on:

2 users

The system load averages for the past 1, 5, and 15 minutes:

1.91 2.04 2.13

uptime syntax

uptime [options]

uptime -p

Displays only the time the computer has been on in a readable manner

uptime -p
up 11 minutes

uptime -s

Displays the time when the system first started

uptime -s
2018-02-14 11:49:24