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environ(5int)							 environ(5int)

Name
       environ - natural language support (NLS) environment variables

Description
       The international environment variables are defined for the ULTRIX sys‐
       tem and are additional to  those	 described  in	the  ULTRIX  reference
       pages,  Sections	 2  (system calls) and 3 (routines), and the reference
       page.  The international variables are made available to a process by

       This reference page is divided into two sections.   The	first  section
       describes  environment  variables  that can control the locale setting.
       The second section describes the variables that control where the func‐
       tion  searches for message catalogs and where the function searches for
       language databases.

   Environment Variables That Control the Locale Setting
       The LANG, LC_COLLATE, LC_TYPE,  LC_NUMERIC,  LC_TIME,  and  LC_MONETARY
       environment variables can control the locale setting.  You define these
       variables using the same format as the locale argument to the function.
       The following shows the format you use:
       language[_territory[.codeset]][@modifier]
       In  language,  you  specify  the	 native language of the user.  You can
       optionally specify the user's dialect and codeset using _territory  and
       codeset.	  For  example, the following definition of LANG specifies the
       French native language, as spoken in France (as opposed to in  Switzer‐
       land), and the Digital Multinational Character Set:
       LANG = FRE_FR.MCS
       In  @modifier,  you  specify  a	specific instance of localization data
       within a single category.  For example, using @modifier, you can	 spec‐
       ify  telephone  directory  ordering  of	data, as opposed to dictionary
       ordering of data.  You cannot use @modifier to define  the  LANG	 vari‐
       able.

       The following list describes the environment variables that control the
       locale setting:

       LANG	      Identifies the user's requirements for native  language,
		      local customs, and coded character set. At run time, you
		      can bind the user's language requirements, as  specified
		      by the setting of to the execution of a program by call‐
		      ing as follows:
		      setlocale (LC_ALL, "");

		      If is not defined in the current environment, the locale
		      defaults to the C locale.	 For more information on the C
		      locale, see the POSIX Conformance Document.

		      System administrators can define to provide  a   default
		      setting  for the system as a whole, or user's can define
		      individually using standard command interpreter  facili‐
		      ties.

       LC_COLLATE     Contains	the  user's  requirements for language, terri‐
		      tory, and codeset for the	 character  collation  format.
		      affects  the  behavior  of  regular  expressions and the
		      string collation functions in and If is not  defined  in
		      the current environment, provides the necessary default.

       LC_CTYPE	      Contains	the  user's  requirements for language, terri‐
		      tory, and codeset for the character  classification  and
		      conversion  format.  affects the behavior of the charac‐
		      ter-handling functions in and If is not defined  in  the
		      current environment, provides the necessary default.

       LC_MONETARY    Contains	the  user's  requirements for language, terri‐
		      tory, and codeset for the monetary format.  affects  the
		      currency	string	in  If	is  not defined in the current
		      environment, provides the necessary default.

       LC_NUMERIC     Contains the user's requirements	for  language,	terri‐
		      tory, and codeset for the numeric data presentation for‐
		      mat.  affects the radix and thousands separator  charac‐
		      ter  for	the  formatted I/O functions in and the string
		      conversion functions in and If is	 not  defined  in  the
		      current environment, provides the necessary default.

       LC_TIME	      Contains	the  user's  requirements for language, terri‐
		      tory, and codeset for  the  time	format.	  affects  the
		      behavior	of  the time functions in If is not defined in
		      the current environment, provides the necessary default.

   Environment Variables That Specify Locations
       The NLSPATH and INTLINFO environment variables control  where  the  and
       functions  search for message catalogs and the language databases.  You
       define these variables using a pathname or set of pathnames.  The path‐
       names  can  contain variable elements, called substitution fields, that
       allow your program or the setting of  other  environment	 variables  to
       affect  the  setting  of NLSPATH and INTLINFO.  The following shows the
       format you use to define these variables:
       variable-name="[:][/directory][/substitution field]
		  [/file-name][:alternate-pathname][:..."
       You specify either NLSPATH or INTLINFO in place of variable-name.

       A colon (:) that precedes other parts of any pathname in the definition
       specifies the current directory.

       In  directory,  you can specify a specific directory in which the func‐
       tion searches.  If you need the environment variable  to	 be  flexible,
       you  can	 use a substitution field in place of or with directory names.
       A substitution field consists of a percent sign (%), followed by a code
       letter.	The substitution fields you can use are as follows:

       %N   The value of the name argument you pass to

       %L   The value of the LANG environment variable

       %l   The language element from LANG

       %t   The territory element from LANG

       %c   The codeset element from LANG

       %%   A literal percent sign

       If  a substitution field you specify is currently undefined, or substi‐
       tutes a null string.  Neither function includes the underscore  (_)  or
       period (.) separator in or substitutions.

       You  can	 specify more than one pathname when you define these environ‐
       ment variables.	You separate each pathname from the one	 that  follows
       it  using a colon (:).  If you need to specify the current directory in
       a pathname other than the first pathname in  the	 list,	use  a	double
       colon  (::).   The  functions  interpret the first colon as a separator
       between pathnames and the second colon as specifying the current direc‐
       tory.

       The  following  describes  the ICONV, INTLINFO, and NLSPATH environment
       variables:

       ICONV	 The ICONV environment variable stores the directory  pathname
		 for  the  conversion  codesets	 used  by the command. If this
		 variable is undefined, searches the directory.

		 The following example shows how to define ICONV:
		 ICONV=/usr/lib/international/conversions
		 In this example, is defined as the directory pathname

       INTLINFO	 The INTLINFO environment variable stores the location of  the
		 language  database.  The  function  reads  INTLINFO  when  it
		 searches for the database.

		 The following example shows how to define INTLINFO:
		 INTLINFO = ":%L:/usr/lib/intln/%L:/usr/lib/intln/ENG_%t.%c"
		 In this example, the function searches for the language data‐
		 base  named  in  the  LANG environment variable. The function
		 searches for the variable in the current  directory.  If  the
		 database  is  not  in	the current directory, searches in the
		 directory for that same database. Finally,  if	 the  database
		 specified by LANG is unavailable, searches in for the English
		 language database that	 matches  the  current	territory  and
		 codeset.

       NLSPATH	 The  NLSPATH environment variable controls where the function
		 searches for a message catalog.

		 The following example shows defines NLSPATH:
		 NLSPATH=":%N.cat:/nlslib/%N.cat:nlslib/program.cat"
		 This definition causes to search in the current directory for
		 the  message catalog named in the name argument you pass.  If
		 the function cannot find the message catalog in  the  current
		 directory,  it	 searches in the directory.  If the catalog is
		 not in that directory, opens the message catalog.

See Also
       exec(2), catopen(3int), intro(3int), setlocale(3), lang(5int)
       Guide to Developing International Software

								 environ(5int)
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