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domainname


       dnsdomainname - show the system's DNS domain name
       nodename - show or set the system's DECnet node name


SYNOPSIS

       hostname [-v] [-a] [--alias] [-d] [--domain] [-f] [--fqdn]
       [-i] [--ip-address]  [--long]  [-s]  [--short]  [-y]  [-n]
       [--node]

       hostname [-v] [-F filename] [--file filename] [hostname]

       domainname [-v] [-F filename] [--file filename] [name]

       nodename [-v] [-F filename] [--file filename] [name]

       hostname [-v] [-h] [--help] [-V] [--version]

       dnsdomainname [-v]


DESCRIPTION

       Hostname is the program that is used to either set or dis­
       play the current host, domain or node name of the  system.
       These names are used by many of the networking programs to
       identify the machine. The domain  name  is  also  used  by
       NIS/YP.

   GET NAME
       When  called  without  any arguments, the program displays
       the current names:

       hostname will print the name of the system as returned  by
       the gethostname(2) function.

       nodename  will print the DECnet node name of the system as
       returned by the getnodename(2) function.

       dnsdomainname will print  the  domain  part  of  the  FQDN
       (Fully  Qualified  Domain  Name). The complete FQDN of the
       system is returned with hostname --fqdn.

   SET NAME
       ing  the  contents of a file which contains the host name,
       e.g.  /etc/hostname).

   THE FQDN
       You can't change the FQDN (as returned by hostname --fqdn)
       or the DNS domain name (as returned by dnsdomainname) with
       this command. The FQDN of the system is the name that  the
       resolver(3) returns for the host name.

       Technically: The FQDN is the name gethostbyname(2) returns
       for the host name returned  by  gethostname(2).   The  DNS
       domain name is the part after the first dot.

       Therefore  it  depends  on  the  configuration (usually in
       /etc/host.conf) how you can change  it.  Usually  (if  the
       hosts  file is parsed before DNS or NIS) you can change it
       in /etc/hosts.


OPTIONS

       -a, --alias
              Display the alias name of the host (if used).

       -d, --domain
              Display the name of the DNS domain. Don't  use  the
              command  domainname  to  get  the  DNS  domain name
              because it will show the NIS domain  name  and  not
              the DNS domain name. Use dnsdomainname instead.

       -F, --file filename
              Read  the  host  name from the specified file. Com­
              ments (lines starting with a `#') are ignored.

       -f, --fqdn, --long
              Display the FQDN (Fully Qualified Domain  Name).  A
              FQDN  consists  of  a  short  host name and the DNS
              domain name. Unless you are using bind or  NIS  for
              host  lookups  you  can change the FQDN and the DNS
              domain name (which is part  of  the  FQDN)  in  the
              /etc/hosts file.

       -h, --help
              Print a usage message and exit.

       -i, --ip-address
              Display the IP address(es) of the host.

       -n, --node
              Display  the  DECnet  node  name. If a parameter is


FILES

       /etc/hosts


AUTHOR

       Peter Tobias, <tobias@et-inf.fho-emden.de>
       Bernd  Eckenfels,  <net-tools@lina.inka.de>  (NIS and man­
       page).
       Steve Whitehouse,  <SteveW@ACM.org>  (DECnet  support  and
       manpage).

net-tools                  28 Jan 1996                HOSTNAME(1)
  

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