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+.\"
+.\" Copyright (c) 2011-2023 Craig Small <csmall@dropbear.xyz>
+.\" Copyright (c) 2011-2023 Jim Warner <james.warner@comcast.net>
+.\" Copyright (c) 2011-2012 Sami Kerola <kerolasa@iki.fi>
+.\" Copyright (c) 2002 Albert Cahalan
+.\"
+.\" This program is free software; you can redistribute it and/or modify
+.\" it under the terms of the GNU General Public License as published by
+.\" the Free Software Foundation; either version 2 of the License, or
+.\" (at your option) any later version.
+.\"
+.\"
+.TH UPTIME "1" "December 2012" "procps-ng" "User Commands"
+.SH NAME
+uptime \- Tell how long the system has been running.
+.SH SYNOPSIS
+.B uptime
+[\fIoptions\fR]
+.SH DESCRIPTION
+.B 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.
+.PP
+This is the same information contained in the header line displayed by
+.BR w (1).
+.PP
+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.
+.SH OPTIONS
+.TP
+\fB\-p\fR, \fB\-\-pretty\fR
+show uptime in pretty format
+.TP
+\fB\-h\fR, \fB\-\-help\fR
+display this help text
+.TP
+\fB\-s\fR, \fB\-\-since\fR
+system up since, in yyyy-mm-dd HH:MM:SS format
+.TP
+\fB\-V\fR, \fB\-\-version\fR
+display version information and exit
+.SH FILES
+.TP
+.I /var/run/utmp
+information about who is currently logged on
+.TP
+.I /proc
+process information
+.SH AUTHORS
+.B uptime
+was written by
+.UR greenfie@gauss.\:rutgers.\:edu
+Larry Greenfield
+.UE
+and
+.UR johnsonm@sunsite.\:unc.\:edu
+Michael K. Johnson
+.UE
+.SH "SEE ALSO"
+.BR ps (1),
+.BR top (1),
+.BR utmp (5),
+.BR w (1)
+.SH "REPORTING BUGS"
+Please send bug reports to
+.UR procps@freelists.org
+.UE