Variable is not working Post: 302883854

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LEARN ABOUT BSD

hostname

HOSTNAME(7)						 Miscellaneous Information Manual					       HOSTNAME(7)

NAME

       hostname - host name resolution description

DESCRIPTION

       Hostnames  are domains, where a domain is a hierarchical, dot-separated list of subdomains; for example, the machine monet, in the Berkeley
       subdomain of the EDU subdomain of the ARPANET would be represented as
		 monet.Berkeley.EDU
       (with no trailing dot).

       Hostnames are often used with network client and server programs, which must generally translate the name to an	address  for  use.   (This
       function is generally performed by the library routine gethostbyname(3).)  Hostnames are resolved by the internet name resolver in the fol-
       lowing fashion.

       If the name consists of a single component, i.e. contains no dot, and if the environment variable ``HOSTALIASES'' is set to the name  of  a
       file,  that  file is searched for an string matching the input hostname.  The file should consist of lines made up of two white-space sepa-
       rated strings, the first of which is the hostname alias, and the second of which is the complete hostname to be substituted for that alias.
       If  a  case-sensitive match is found between the hostname to be resolved and the first field of a line in the file, the substituted name is
       looked up with no further processing.

       If the input name ends with a trailing dot, the trailing dot is removed, and the remaining name is looked up with no further processing.

       If the input name does not end with a trailing dot, it is looked up in the local domain and its parent domains  until  either  a  match	is
       found  or  fewer  than 2 components of the local domain remain.	For example, in the domain CS.Berkeley.EDU, the name lithium.CChem will be
       checked first as lithium.CChem.CS.Berkeley.EDU and then as lithium.CChem.Berkeley.EDU.  Lithium.CChem.EDU will not be tried, as	the  there
       is only one component remaining from the local domain.

SEE ALSO

       gethostbyname(3), resolver(5), mailaddr(7), named(8), RFC883

4.2 Berkeley Distribution					 November 21, 1987						       HOSTNAME(7)