NetBSD/usr.sbin/rdate/rdate.8

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.\" $NetBSD: rdate.8,v 1.14 2017/08/27 20:45:47 wiz Exp $
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.\" Copyright (c) 1994 Christos Zoulas
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.Dd August 26, 2017
.Dt RDATE 8
.Os
.Sh NAME
.Nm rdate
.Nd set the system's date from a remote host
.Sh SYNOPSIS
.Nm
.Op Fl 46aps
.Ar host
.Sh DESCRIPTION
.Nm
displays and sets the local date and time from the
host name or address given as the argument.
It uses the RFC 868 protocol which is usually implemented as a
built-in service of
.Xr inetd 8 .
.Pp
Available options:
.Bl -tag -width indent
.It Fl 4
Forces
.Nm
to use IPv4 addresses only.
.It Fl 6
Forces
.Nm
to use IPv6 addresses only.
.It Fl a
Use the
.Xr adjtime 2
call to gradually skew the local time to the
remote time rather than just hopping.
.It Fl p
Do not set, just print the remote time
.It Fl s
Do not print the time.
.El
.Sh FILES
.Bl -tag -width /var/log/wtmp -compact
.It Pa /var/log/wtmp
A record of date resets and time changes.
.El
.Sh SEE ALSO
.Xr adjtime 2 ,
.Xr gettimeofday 2 ,
.Xr utmp 5 ,
.Xr inetd 8