linux man page for uptime

UPTIME(1)							Linux User's Manual							 UPTIME(1)

NAME
       uptime - Tell how long the system has been running.

SYNOPSIS
       uptime
       uptime [-V]

DESCRIPTION
       uptime  gives  a one line display of 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.

       This is the same information contained in the header line displayed by w(1).

       System load averages is the average number of processes that are either in a runnable or uninterruptable state.	A process  in  a  runnable
       state  is either using the CPU or waiting to use the CPU. A process in uninterruptable state is waiting for some I/O access, eg waiting for
       disk.  The averages are taken over the three time intervals.  Load averages are not normalized for the number of CPUs in  a  system,  so  a
       load average of 1 means a single CPU system is loaded all the time while on a 4 CPU system it means it was idle 75% of the time.

FILES
       /var/run/utmp
	      information about who is currently logged on

       /proc  process information

AUTHORS
       uptime was written by Larry Greenfield <greenfie@gauss.rutgers.edu> and Michael K. Johnson <johnsonm@sunsite.unc.edu>.

       Please send bug reports to <albert@users.sf.net>

SEE ALSO
       ps(1), top(1), utmp(5), w(1)

Cohesive Systems						    26 Jan 1993 							 UPTIME(1)