inetutils-dnsdomainname (1) Linux Manual Page
GNU Network Utilities
NAME
dnsdomainname – show DNS domain name
SYNOPSIS
dnsdomainname [option … ]
DESCRIPTION
Show the domain part of the system’s fully qualified host name.
The tool uses gethostname(2) to get the host name of the system and getaddrinfo(2) to resolve it into a canonical name. The part after the first period (`.’ ) of the canonical name is shown.
OPTIONS
-? , -help- Give this help list.
–usage- Give a short usage message.
-V , -version- Print program version.
SEE ALSO
gethostname(2), getaddrinfo(3)