Name

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      GETENV2

Purpose

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      Version of getenv portable across operating systems.

Category

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Calling Sequence

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      val = getenv(var)

Inputs

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      var = Name of environmental variable. in

Keyword Parameters

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Keywords

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        LIST=v 1 means list source, else 0 (default).
          Remembers last setting during session.

Outputs

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      val = Returned value of requested variable. out
            Null string if variable not found.

Common Blocks

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      getenv2_com

Notes

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      Notes: The requested variable may either be an actual
      environmental variable, or the contents of a file with
      that name located in !base_dir. The second case is portable
      across operating systems. Just define !base_dir in your
      IDL startup file to point to some directory. Example:
        defsysv, '!base_dir', '/homes/sterner/idl/base_dir', 1
      The value from !base_dir takes precedence.

Modification History

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      R. Sterner, 1998 Mar 18
      R. Sterner, 1998 May 18 --- fixed to work if !base_dir not defined.
      R. Sterner, 2010 May 23 --- Converted arrays from () to [].
  Copyright (C) 1998, Johns Hopkins University/Applied Physics Laboratory
  This software may be used, copied, or redistributed as long as it is not
  sold and this copyright notice is reproduced on each copy made. This
  routine is provided as is without any express or implied warranties
  whatsoever. Other limitations apply as described in the file disclaimer.txt.