Man page of HOSTNAME
Section: Linux Programmer's Manual (1)
Updated: 28 Jan 1996
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hostname - show or set the system's host name
dnsdomainname - show the system's DNS domain name
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 programs to identify the machine. The domain
name is also used by NIS/YP.
When called without any arguments, the program displays the current
will print the name of the system as returned by the
will print the domain part of the FQDN (Fully Qualified Domain Name). The
complete FQDN of the system is returned with
When called with one argument or with the
option, the commands set the host name or the NIS/YP domain name.
Note that this is effective 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
The host name is usually set once at system startup in
(normally by reading the contents of a file which contains
the host name, e.g.
You can't change the FQDN (as returned by
or the DNS domain name (as returned by
with this command. The FQDN of the system is the name that the
returns for the host name.
Technically: The FQDN is the name
returns for the host name returned by
The DNS domain name is the part after the first dot.
Therefore it depends on the configuration (usually in
how you can change it. Usually (if the hosts file is parsed before DNS or
NIS) you can change it in
- -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
to get the DNS domain name because it will show the NIS domain name and
not the DNS domain name. Use
- -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 successfully.
- -v, --verbose
Be verbose and tell what's going on.
- -y, --yp, --nis
Display the NIS domain name. If a parameter is given (or
) then root can also set a new NIS domain.
The address families
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
This file should only contain domain name and not the full FQDN.
Peter Tobias, <[email protected]>
Bernd Eckenfels, <[email protected]> (NIS and manpage).
- GET NAME
- SET NAME
- THE FQDN
This document was created by
using the manual pages.
Time: 03:41:10 GMT, September 24, 2010