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.\"	@(#)hostname.1	8.2 (Berkeley) 4/28/95
.\" $FreeBSD: src/bin/hostname/hostname.1,v 1.10.2.4 2002/04/22 22:20:29 keramida Exp $
.\" $DragonFly: src/bin/hostname/hostname.1,v 1.5 2007/12/16 02:55:37 thomas Exp $
.\"
.Dd April 28, 1995
.Dt HOSTNAME 1
.Os
.Sh NAME
.Nm hostname
.Nd set or print name of current host system
.Sh SYNOPSIS
.Nm
.Op Fl s
.Op Ar name-of-host | Fl r Ar ip-address | Fl i Ar interface Op Fl 6 | Fl 4
.Sh DESCRIPTION
The
.Nm
utility prints the name of the current host.
The super-user can set the hostname by supplying an argument;
this is usually done at boot time by setting the
.Va hostname
variable in
.Pa /etc/rc.conf .
.Pp
Options:
.Bl -tag -width flag
.It Fl s
Trim off any domain information from the printed
name.
.It Fl r
Retrieve hostname via ip lookup.
The hostname is set to the first (official)
name returned for the supplied ip address.
Can be an IPv6 or IPv4 address.
.It Fl i
Retrieve hostname via supplied interface name.
.It Fl 6
Used in conjunction with
.Fl i
to select the 1st IPv6 address on the interface.
.It Fl 4
Used in conjunction with
.Fl i
to select the 1st IPv4 address on the interface.
This is the default and assumed if
.Fl 6
or
.Fl 4
is not supplied.
.El
.Sh SEE ALSO
.Xr gethostname 3 ,
.Xr rc.conf 5
.Sh HISTORY
The
.Nm
command appeared in
.Bx 4.2 .