1.\" $OpenBSD: rdate.8,v 1.13 2001/08/03 16:03:02 mpech Exp $ 2.\" $NetBSD: rdate.8,v 1.4 1996/04/08 20:55:17 jtc Exp $ 3.\" 4.\" Copyright (c) 1994 Christos Zoulas 5.\" All rights reserved. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 3. All advertising materials mentioning features or use of this software 16.\" must display the following acknowledgement: 17.\" This product includes software developed by Christos Zoulas. 18.\" 4. The name of the author may not be used to endorse or promote products 19.\" derived from this software without specific prior written permission. 20.\" 21.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31.\" 32.Dd April 30, 1994 33.Dt RDATE 8 34.Os 35.Sh NAME 36.Nm rdate 37.Nd set the system's date from a remote host 38.Sh SYNOPSIS 39.Nm rdate 40.Op Fl psa 41.Ar host 42.Sh DESCRIPTION 43.Nm 44displays and sets the local date and time from the 45host name or address given as the argument. 46It uses the RFC868 47protocol which is usually implemented as a built-in service of 48.Xr inetd 8 . 49.Pp 50The options are as follows: 51.Bl -tag -width Ds 52.It Fl p 53Do not set, just print the remote time 54.It Fl s 55Do not print the time. 56.It Fl a 57Use the 58.Xr adjtime 2 59call to gradually skew the local time to the 60remote time rather than just hopping. 61.Sh FILES 62.Bl -tag -width /var/log/wtmp -compact 63.It Pa /var/log/wtmp 64record of date resets and time changes 65.El 66.Sh SEE ALSO 67.Xr adjtime 2 , 68.Xr gettimeofday 2 , 69.Xr inetd 8 70 71