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upclient(8)		  BSD System Manager's Manual		   upclient(8)

     upclient -- logs system uptime with

     [sudo] upclient [-h] [-V] [-v|-vv|-vvv]

     [sudo] kill `cat /var/run/`

     Client for	The Uptimes Project

     The Uptimes Project collects data on the amount of	time a computer	has
     been running since	its last reboot	and provides statistics	on various op-
     erating system and	hardware configurations.

     Upon starting, the	daemon logs a brief message to stderr and syslog (on
     those operating systems that support syslog) then forks into the back-
     ground. If	the daemon cannot start	it will	try to output error messages
     to	stderr and syslog. Normally the	daemon runs quietly and	unobtrusively
     in	the background.

     By	default	no uptime transmissions	will be	logged.	This means that	once
     UpClient has started, there will be no indication in the system logs that
     UpClient is still running unless it encounters a problem.

     -v	     Every few minutes whenever	UpClient transmits data	to the server
	     an	entry will be recorded to syslog. This is useful for monitor-
	     ing whether UpClient is working.

     -vv     Verbose-verbose mode. A few additional status and error messages
	     will be logged to aid basic troubleshooting.

     -vvv    Verbose-verbose-verbose mode may be useful	for troubleshooting or
	     to	satisfy	curiosity. To see even more status messages, UpClient
	     can be compiled in	DEBUG mode (see	below).

     -h	     Display a brief usage message and exit.

     -V	     Show the version and exit.

     If	you need to stop UpClient, signal it with TERM and it will clean up
     its pid file then quit. The easiest way to	do this	is [sudo] kill `cat
     /var/run/`.  The daemon ignores INT signals.

      1. Create	an account at:
      2. Add a host, this gives	you an authorization key.
      3. Paste your auth key into /usr/local/etc/upclient.conf.
      4. Start the upclient daemon: [sudo] /usr/local/sbin/upclient.
      5. Visit your account at	to view	your
	 machine's status and other collected statistics.

     UpClient performs certain actions when it receives	certain	signals:

	     Resets the	timer and causes UpClient to transmit uptime status

     SIGHUP  Tells UpClient to re-read the configuration file and restart.

     If	you suspect a problem with UpClient, check your	syslog for upclient

     My	AuthKey	is correct but UpClient	refuses	to start due to	'ERROR:
     AuthKey is	not 32 bytes long!'".

     Remove any	enclosing braces < > from the authkey. As of 5.0b7 these have
     been removed from the upclient.conf template to avoid confusion.

     The uptime	server is not receiving	any reports. Everything	appears	fine
     and my machine is not behind a firewall."

     Make sure the client is not compiled with -DPARANOID. This	flag is	for
     debugging only, it	prevents any reports from actually being transmitted.

     On	BSD systems UpClient must be run as root to send usage and idle	time.
     As	of UpClient 5.0b6, Darwin / Mac	OS X no	longer has this	requirement as
     new code was added	for Mach-based systems where this restriction does not

     Use the following command to trigger an immediate UpClient	transmission:

     [sudo] kill -SIGALRM `cat /var/run/`

     To	have UpClient output many debugging messages to	the syslog, recompile
     it	in debug mode. Set the EXTRA_CFLAGS envvar to '-DDEBUG', or edit the
     Makefile to add '-DDEBUG' to the CFLAGS line in the section appropriate
     for your system, like this:


	     process id

      Carsten Klapp <>
      Protocol 5 client

      Ryan Grove <>
      Protocol 5, Uptimes Server and web site

      Alex C. de Haas <>
      Protocol 4 client

      Martijn Broenland	<>
      Original Author

     Many people have contributed to the uptime	client.	Please see /usr/lo-

     Copyright (C) 1999-2002 Martijn Broenland,	Alex C.	de Haas, Carsten Klapp

     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.

     This program is distributed in the	hope that it will be useful, but WITH-
     OUT ANY WARRANTY; without even the	implied	warranty of MERCHANTABILITY or
     FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
     more details.

     You should	have received a	copy of	the GNU	General	Public License along
     with this program;	if not,	write to the Free Software Foundation, Inc.,
     59	Temple Place, Suite 330, Boston, MA 02111-1307 USA

     uptime(1),	ruptime(1), getloadavg(3), uname(3), sysctl(8)

     IMPORTANT:	5.0b8 includes bug fixes to prevent potential buffer overflows
     which could present a local root compromise on BSD-based systems includ-
     ing Mac OS	X. All upclient	5 beta users should upgrade to 5.0b8 as	soon
     as	possible.

     WARNING: There are	potential security issues under	Linux (strcpy in
     stats-lns.c). For now this	isn't a	critical issue as upclient does	not
     require superuser priveleges to run under Linux. This will	be fixed in
     the next beta.

     When /usr/local/etc/upclient.conf cannot be found at the compiled-in
     path, UpClient tries to find one in a couple other	locations, and logs
     which one is being	used instead. If there are errors in the "alternate"
     config file, UpClient will	mention	the name and path of the compiled-in
     config file instead of the	one found.

     Version 5 by default transmits uptime information via UDP to port 49153
     to	reduce load on the server. If you are behind a closed firewall or us-
     ing a proxy server	the client uses	the older protocol 4.2 via HTTP	in-
     stead, with the same functionality. See /usr/local/share/doc/upclient/
     for more information.

     $Id:,v 1.9 2003/05/26	21:35:19 carstenklapp Exp $

GPL			      September	27, 2020			   GPL


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