1.\" Copyright (c) 1983, 1988, 1990, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)hostname.1 8.2 (Berkeley) 4/28/95 33.\" $FreeBSD: src/bin/hostname/hostname.1,v 1.10.2.4 2002/04/22 22:20:29 keramida Exp $ 34.\" $DragonFly: src/bin/hostname/hostname.1,v 1.5 2007/12/16 02:55:37 thomas Exp $ 35.\" 36.Dd April 28, 1995 37.Dt HOSTNAME 1 38.Os 39.Sh NAME 40.Nm hostname 41.Nd set or print name of current host system 42.Sh SYNOPSIS 43.Nm 44.Op Fl s 45.Op Ar name-of-host | Fl r Ar ip-address | Fl i Ar interface Op Fl 6 | Fl 4 46.Sh DESCRIPTION 47The 48.Nm 49utility prints the name of the current host. 50The super-user can set the hostname by supplying an argument; 51this is usually done at boot time by setting the 52.Va hostname 53variable in 54.Pa /etc/rc.conf . 55.Pp 56Options: 57.Bl -tag -width flag 58.It Fl s 59Trim off any domain information from the printed 60name. 61.It Fl r 62Retrieve hostname via ip lookup. 63The hostname is set to the first (official) 64name returned for the supplied ip address. 65Can be an IPv6 or IPv4 address. 66.It Fl i 67Retrieve hostname via supplied interface name. 68.It Fl 6 69Used in conjunction with 70.Fl i 71to select the 1st IPv6 address on the interface. 72.It Fl 4 73Used in conjunction with 74.Fl i 75to select the 1st IPv4 address on the interface. 76This is the default and assumed if 77.Fl 6 78or 79.Fl 4 80is not supplied. 81.El 82.Sh SEE ALSO 83.Xr gethostname 3 , 84.Xr rc.conf 5 85.Sh HISTORY 86The 87.Nm 88command appeared in 89.Bx 4.2 . 90