DOMAINNAME(1) — Unix Programmer’s Manual
NAME
domainname − set or display name of current domain system
SYNOPSIS
domainname [ nameofdomain ]
DESCRIPTION
Without an argument, domainname prints the name of the current domain. With an argument, domainname sets the domain’s name to be the argument. Only the super-user can set the domainname. Usually the domainname is set in the startup script /etc/rc.local.
Currently, domains are used only by the yellow pages to refer collectively to a group of hosts.
SEE ALSO
INTEGRATED SOLUTIONS 4.3 BSD — 23 September 1985