1.\"- 2.\" Copyright (c) 1983, 1988, 1990, 1993 3.\" The Regents of the University of California. All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 3. Neither the name of the University nor the names of its contributors 14.\" may be used to endorse or promote products derived from this software 15.\" without specific prior written permission. 16.\" 17.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27.\" SUCH DAMAGE. 28.\" 29.Dd October 5, 2020 30.Dt HOSTNAME 1 31.Os 32.Sh NAME 33.Nm hostname 34.Nd set or print the name of current host system 35.Sh SYNOPSIS 36.Nm 37.Op Fl f 38.Op Fl s | d 39.Op Ar name-of-host 40.Sh DESCRIPTION 41The 42.Nm 43utility prints the name of the current host. 44The super-user can 45set the hostname by supplying an argument; this is usually done in the 46initialization script 47.Pa /etc/rc.d/hostname , 48normally run at boot 49time. 50This script uses the 51.Va hostname 52variable in 53.Pa /etc/rc.conf . 54.Pp 55Options: 56.Bl -tag -width flag 57.It Fl f 58Include domain information in the printed name. 59This is the default behavior. 60.It Fl s 61Trim off any domain information from the printed 62name. 63.It Fl d 64Only print domain information. 65.El 66.Sh EXAMPLES 67Set the host name of the machine and check the result: 68.Bd -literal -offset indent 69$ hostname beastie.localdomain.org 70$ hostname 71beastie.localdomain.org 72.Ed 73.Pp 74Do not show domain information: 75.Bd -literal -offset indent 76$ hostname -s 77beastie 78.Ed 79.Pp 80Show only domain information: 81.Bd -literal -offset indent 82$ hostname -d 83localdomain.org 84.Ed 85.Sh SEE ALSO 86.Xr gethostname 3 , 87.Xr rc.conf 5 88.Sh HISTORY 89The 90.Nm 91command appeared in 92.Bx 4.2 . 93