System uptime refers to the length of time that a computer system has been running without interruption. It is an important metric for system administrators, as it can provide insights into system stability and performance. There are several ways to check system uptime in Linux, including using the uptime command.
The uptime command provides information about the system’s uptime, as well as the current time, the number of users logged in, and the system load average. To use the uptime command, simply type uptime into a terminal window. The output of the command will look something like this: