DNSDOMAINNAME(1)                 User Commands                DNSDOMAINNAME(1)

NAME
       dnsdomainname - show DNS domain name

SYNOPSIS
       dnsdomainname [OPTION...]

DESCRIPTION
       Show domain part of the system's fully qualified host name.

       The tool uses gethostname to get the host name of the system and
       getaddrinfo to resolve it into a canonical name.  The part after the
       first period ('.') of the canonical name is shown.

       -?, --help
              give this help list

       --usage
              give a short usage message

       -V, --version
              print program version

AUTHOR
       Written by Simon Josefsson.

REPORTING BUGS
       Report bugs to <bug-inetutils@gnu.org>.

COPYRIGHT
       Copyright (C) 2025 Free Software Foundation, Inc.  License GPLv3+: GNU
       GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.
       There is NO WARRANTY, to the extent permitted by law.

SEE ALSO
       gethostname(2), getaddrinfo(3)

       The full documentation for dnsdomainname is maintained as a Texinfo
       manual.  If the info and dnsdomainname programs are properly installed
       at your site, the command

              info dnsdomainname

       should give you access to the complete manual.

GNU inetutils 2.7-modified       January 2026                 DNSDOMAINNAME(1)