UPTIME(1)						   User Commands						 UPTIME(1)



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

SYNOPSIS
       uptime [options]

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 normal‐
       ized 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.

OPTIONS
       -h, --help
	      display this help text

       -V, --version
	      display version information and exit

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⟩

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

REPORTING BUGS
       Please send bug reports to ⟨procps@freelists.org⟩



procps-ng						     June 2011							 UPTIME(1)