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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | FILES | AUTHORS | SEE ALSO | REPORTING BUGS | COLOPHON |
UPTIME(1) User Commands UPTIME(1)
uptime - Tell how long the system has been running.
uptime [options]
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.
-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
/var/run/utmp
information about who is currently logged on
/proc process information
uptime was written by Larry Greenfield ⟨greenfie@gauss.rutgers.edu⟩
and Michael K. Johnson ⟨johnsonm@sunsite.unc.edu⟩
ps(1), top(1), utmp(5), w(1)
Please send bug reports to ⟨procps@freelists.org⟩
This page is part of the procps-ng (/proc filesystem utilities)
project. Information about the project can be found at
⟨https://gitlab.com/procps-ng/procps⟩. If you have a bug report for
this manual page, see
⟨https://gitlab.com/procps-ng/procps/blob/master/Documentation/bugs.md⟩.
This page was obtained from the project's upstream Git repository
⟨https://gitlab.com/procps-ng/procps.git⟩ on 2017-07-05. If you dis‐
cover any rendering problems in this HTML version of the page, or you
believe there is a better or more up-to-date source for the page, or
you have corrections or improvements to the information in this
COLOPHON (which is not part of the original manual page), send a mail
to man-pages@man7.org
procps-ng December 2012 UPTIME(1)
Pages that refer to this page: pcp-uptime(1), tload(1), top(1), w(1), getloadavg(3), proc(5)