getenv man page on DigitalUNIX

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getenv(3)							     getenv(3)

NAME
       getenv - Return the value of an environment variable

SYNOPSIS
       #include <stdlib.h>

       char *getenv(
	       const char *name );

LIBRARY
       Standard C Library (libc)

STANDARDS
       Interfaces  documented on this reference page conform to industry stan‐
       dards as follows:

       getenv():  XPG4, XPG4-UNIX

       Refer to the standards(5) reference page	 for  more  information	 about
       industry standards and associated tags.

PARAMETERS
       Specifies the name of an environment variable.

DESCRIPTION
       The getenv() function searches the environment list for a string of the
       form name=value, and returns a pointer to a string containing the  cor‐
       responding value for name.

       The  returned string should not be modified by the application, but may
       be overwritten by a subsequent call to the getenv() or  putenv()	 func‐
       tions from the same thread.

RETURN VALUES
       The  getenv()  function	returns	 a  pointer to a string containing the
       value in the current environment if such a string is present.  If  such
       a string is not present, a null pointer is returned.

SEE ALSO
       Functions: putenv(3), clearenv(3)

       Commands: sh(1)

       Standards: standards(5)

								     getenv(3)
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