hostname man page on OSF1

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hostname(5)							   hostname(5)

NAME
       hostname - Host name resolution description

DESCRIPTION
       Host names 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 Internet would be represented as
       follows: monet.Berkeley.EDU

       Notice that there is no trailing dot.

       Host names 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 gethostbyname() function.)  Host
       names are resolved by the Internet name resolver in the following fash‐
       ion.

       If the name consists of a single component (that is, contains no	 dot),
       and  if	the  HOSTALIASES  environment variable is set to the name of a
       file, that file is searched for a string matching the input host	 name.
       The  file  should consist of lines made up of two white-space separated
       strings, the first of which is the host name alias, and the  second  of
       which is the complete host name to be substituted for that alias.  If a
       case-insensitive match is found between the host name  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 process‐
       ing.

       If the input name does not end with a trailing dot, it is looked up  by
       searching through a list of domains until a match is found. The default
       search list includes first the local domain, then  its  parent  domains
       with  at	 least	2 name components (longest first). 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 there  is  only	one  component
       remaining  from	the  local domain. The search path can be changed from
       the default by a system-wide configuration file.

SEE ALSO
       Functions: gethostbyname(3)

       Commands: named(8)

								   hostname(5)
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