getenv - get the value of an environment variable

Calling Sequence

env=getenv(str [, rep] )

Parameters

• str : character string specifying environment variable name rep : an optional character string. When this optional value is used, the function getenv returns the value rep when the environment variable str is not found.
• env : character string which contain the environment variable value

Description

Return the value of an environment variable if it exists.

Examples

 getenv('SCI')
 getenv('FOO','foo')