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.\" Copyright 1992, 1995 Rickard E. Faith (faith@cs.unc.edu)
.\" May be distributed under the GNU General Public License
.TH DOMAINNAME 1 "16 February 1995" "Linux 1.0" "Linux Programmer's Manual"
.SH NAME
domainname \- set or print NIS domain of current host
.SH SYNOPSIS
.BR "domainname [ " name " ]"
.SH DESCRIPTION
.B domainname
prints the NIS domainname of the current host, from the
.BR getdomainname (3)
library call. If an argument is present and the effective UID is 0,
.B domainname
changes the NIS domainname of the host, with the
.BR setdomainname (2)
system call. This is usually done at boot time in the
.I /etc/rc.local
script.
.PP
.B Note:
This command sets the NIS (Network Information Services) domain,
.I not
the DNS (Domain Name System) domain. Unless you are running NIS
(formerly known as Sun Yellow Pages (YP)), you should
.I not
use the
.B domainname
command to set your domain. You probably want to set the DNS domain, which
is used to map human-readable machine names into IP addresses on the
InterNet. See
.BR dnsdomainname (1)
for more information.
.SH FILES
.I /etc/rc.local
.SH "SEE ALSO"
.BR hostname (1),
.BR dnsdomainname (1),
.BR named (8),
.BR sendmail (8),
.bR ypinit (8)
.SH AUTHOR
Lars Wirzenius by substituting in hostname.c
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