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domainname(1) [osx man page]

DOMAINNAME(1)						    BSD General Commands Manual 					     DOMAINNAME(1)

domainname -- set or print name of current YP/NIS domain SYNOPSIS
domainname [ypdomain] DESCRIPTION
The domainname utility prints the name of the current YP/NIS domain. The super-user can set the domain name by supplying an argument; this is usually done at startup by specifying a domain name in the contents of the file /etc/defaultdomain. NOTES
The YP/NIS (formerly ``Yellow Pages'' but renamed for legal reasons) domain name does not necessarily have anything to do with the Domain Name System domain name, although they are often set equal for administrative convenience. SEE ALSO
getdomainname(3) HISTORY
The domainname command appeared in FreeBSD 1.1, based on a similar command in SunOS. BSD
September 18, 1994 BSD

Check Out this Related Man Page

domainname(8)						      System Manager's Manual						     domainname(8)

domainname - set or display name of current domain nisdomainname - set or display name of current NIS(YP) domain ypdomainname - set or display name of current NIS(YP) domain SYNOPSIS
domainname [ domain ] nisdomainname [ domain ] ypdomainname [ domain ] DESCRIPTION
Without an argument, domainname displays the name of the current NIS domainname of the system. domainname uses the getdomainname(2) function for getting the domainname, nisdomainname and ypdomainname are using yp_get_default_domain(3). Only the super-user can set the name of the domain by specifying the new domain as an argument. All three programs uses setdomainname(2) for this. Bear in mind, that already running programs may continue to use the old domainname. SEE ALSO
getdomainname(2), setdomainname(2), yp_get_default_domain(3), ypbind(8), ypcat(1), ypmatch(1), ypwhich(1), yppoll(8), ypserv(8), ypset(8) AUTHOR
domainname is part of the yp-tools package, which was written by Thorsten Kukuk <>. YP Tools 2.12 April 2010 domainname(8)
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