DNSDOMAINNAME(1) General Commands Manual (urm) DNSDOMAINNAME(1)

dnsdomainname — show DNS domain name

dnsdomainname [option ...]

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.

-?, --help
Give this help list.
Give a short usage message.
, --version
Print program version.

gethostname(2), getaddrinfo(3)

February 1, 2019 GNU Network Utilities