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HP-UX 11i Version 3: February 2007

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domainname — set or display name of Network Information Service domain


domainname [name_of_domain]


Network Information Service (NIS) uses domain names to refer collectively to a group of hosts. Without an argument, domainname displays the name of the NIS domain. Only superuser can set the domain name by providing name_of_domain. The domain name is usually set in the configuration file /etc/rc.config.d/namesvrs by setting the NIS_DOMAIN variable.


The name_of_domain is normally a valid Internet domain name.

NIS servers use the NIS domain name as the name of a subdirectory of /var/yp. For this reason, name_of_domain should not be a . or .. and it should not contain /. Since the NIS domain name can be as long as 64 characters, name_of_domain may exceed the maximum file name length allowed on a given file system. If that length is exceeded, the subdirectory name becomes a truncated version of the NIS domain name.

The first 14 characters of all NIS domains on the network must be unique; truncated names should be checked to verify that they meet this requirement.


domainname was developed by Sun Microsystems, Inc.


ypinit(1M), getdomainname(2), setdomainname(2).

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