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.TH HOSTNAME 1 "28 Jan 1996" "net-tools" "Linux Programmer's Manual"
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hostname \- show or set the system's host name
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dnsdomainname \- show the system's DNS domain name
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.RB [ \-\-ip-address ]
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.RB [ \-\-file\ filename ]
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is used to either set or display
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the current host or domain name of the system. This name is used
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by many of the networking programs to identify the machine. The domain
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name is also used by NIS/YP.
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When called without any arguments, the program displays the current
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will print the name of the system as returned by the
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will print the domain part of the FQDN (Fully Qualified Domain Name). The
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complete FQDN of the system is returned with
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.BR "hostname \-\-fqdn" .
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When called with one argument or with the
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option, the commands set the host name or the NIS/YP domain name.
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Note, that only the super-user can change the names.
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It is not possible to set the FQDN or the DNS domain name with the
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The host name is usually set once at system startup in
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(normally by reading the contents of a file which contains
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You can't change the FQDN (as returned by
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.BR "hostname \-\-fqdn" )
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or the DNS domain name (as returned by
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with this command. The FQDN of the system is the name that the
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returns for the host name.
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Technically: The FQDN is the name
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.BR gethostbyname (2)
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returns for the host name returned by
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The DNS domain name is the part after the first dot.
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Therefore it depends on the configuration (usually in
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how you can change it. Usually (if the hosts file is parsed before DNS or
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NIS) you can change it in
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Display the alias name of the host (if used).
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Display the name of the DNS domain. Don't use the command
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to get the DNS domain name because it will show the NIS domain name and
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not the DNS domain name. Use
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.I "\-F, \-\-file filename"
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Read the host name from the specified file. Comments (lines starting with
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.I "\-f, \-\-fqdn, \-\-long"
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Display the FQDN (Fully Qualified Domain Name). A FQDN consists of a
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short host name and the DNS domain name. Unless you are using bind or NIS
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for host lookups you can change the FQDN and the DNS domain name (which is
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part of the FQDN) in the \fI/etc/hosts\fR file.
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Print a usage message and exit.
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.I "\-i, \-\-ip-address"
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Display the IP address(es) of the host.
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Display the short host name. This is the host name cut at the first dot.
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.I "\-V, \-\-version"
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Print version information on standard output and exit successfully.
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.I "\-v, \-\-verbose"
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Be verbose and tell what's going on.
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.I "\-y, \-\-yp, \-\-nis"
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Display the NIS domain name. If a parameter is given (or
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) then root can also set a new NIS domain.
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Peter Tobias, <tobias@et-inf.fho-emden.de>
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Bernd Eckenfels, <net-tools@lina.inka.de> (NIS and manpage).
added
removed
man/en_US.88591/hostname.1
