1.\" $NetBSD: rdate.8,v 1.11 2009/10/21 01:07:47 snj Exp $ 2.\" 3.\" Copyright (c) 1994 Christos Zoulas 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25.\" 26.Dd April 30, 1994 27.Dt RDATE 8 28.Os 29.Sh NAME 30.Nm rdate 31.Nd set the system's date from a remote host 32.Sh SYNOPSIS 33.Nm 34.Op Fl psa 35.Ar host 36.Sh DESCRIPTION 37.Nm 38displays and sets the local date and time from the 39host name or address given as the argument. It uses the RFC 868 40protocol which is usually implemented as a built-in service of 41.Xr inetd 8 . 42.Pp 43Available options: 44.Pp 45.Bl -tag -width indent 46.It Fl p 47Do not set, just print the remote time 48.It Fl s 49Do not print the time. 50.It Fl a 51Use the 52.Xr adjtime 2 53call to gradually skew the local time to the 54remote time rather than just hopping. 55.El 56.Sh FILES 57.Bl -tag -width /var/log/wtmp -compact 58.It Pa /var/log/wtmp 59A record of date resets and time changes. 60.El 61.Sh SEE ALSO 62.Xr adjtime 2 , 63.Xr gettimeofday 2 , 64.Xr utmp 5 , 65.Xr inetd 8 66