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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  min‐
       utes.

       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  unin‐
       terruptable  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.

OPTIONS
       -p, --pretty
              show uptime in pretty format

       -h, --help
              display this help text

       -s, --since
              system up since, in yyyy-mm-dd HH:MM:SS format

       -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 ⟨[email protected]⟩ 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 ⟨[email protected]⟩



procps-ng                                           December 2012                                           UPTIME(1)