uptime - Shows how long a system has been running
command displays the current time, the
amount of time since the system was last started, the number of users logged
into the system, and the load averages.
Prints the Mach factor instead of the load average.
The display of the uptime command is identical to the heading of a w command display.
The load average numbers give the number of jobs in the run queue for
the last 5 seconds, the last 30 seconds, and the last 60 seconds. The Mach
factor is a variant of the load average, given for the same intervals; the
closer its value to
0, the higher the load.
Commands: w(1), ruptime(1)