Man Hostname en anglais
HOSTNAME(1)                Linux Programmer's Manual               HOSTNAME(1)



 

NAME


       hostname - show or set the system's host name
       dnsdomainname - show the system's DNS domain name


 

SYNOPSIS


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

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

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

       dnsdomainname [-v]


 

DESCRIPTION






       Hostname is used to either set or display the current  host  or  domain
       name  of  the system.  This name is used by many of the networking pro-
       grams 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  gethost-
       name(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


       When  called  with one argument or with the --file option, the commands
       set the host name or the NIS/YP domain name.  Note that this is  effec-
       tive  only  until  the  next  reboot.  Edit /etc/hostname for permanent
       change.

       Note, that only the super-user can change the names.

       It is not possible to set the FQDN or the DNS domain name with the dns-
       domainname command (see THE FQDN below).

       The   host   name   is   usually   set   once   at  system  startup  in
       /etc/rc.d/rc.inet1 or /etc/init.d/boot (normally by  reading  the  con-
       tents 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. Comments (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 network address(es) of the host.

       -s, --short
              Display the short host name. This is the host name  cut  at  the
              first dot.

       -V, --version
              Print  version  information on standard output and exit success-
              fully.

       -v, --verbose
              Be verbose and tell what's going on.

       -y, --yp, --nis
              Display the NIS domain name. If a parameter is given (or  --file
              name ) then root can also set a new NIS domain.

 

NOTES


       The  address  families hostname tries when looking up the FQDN, aliases
       and network addresses of the host are determined by  the  configuration
       of  your resolver.  For instance, on GNU Libc systems, the resolver can
       be instructed to try IPv6 lookups first by using the  inet6  option  in
       /etc/resolv.conf.

 

FILES


       /etc/hosts  /etc/hostname This file should only contain domain name and
       not the full FQDN.

 

AUTHORS


       Peter Tobias, 
       Bernd Eckenfels,  (NIS and manpage).



net-tools                         28 Jan 1996                      HOSTNAME(1)