clearenv man page on DigitalUNIX

clearenv man page on DigitalUNIX

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clearenv(3)							   clearenv(3)

NAME
       clearenv - Clears the process environment

SYNOPSIS
       #include <stdlib.h>

       int clearenv(
	       void );

LIBRARY
       Standard C Library (libc)

DESCRIPTION
       The clearenv() function clears the process environment.	No environment
       variables are defined immediately  after	 a  call  to  clearenv().  The
       clearenv()  function sets the value of the external variable environ to
       NULL.

NOTES
       Trial use

RETURN VALUES
       Upon successful completion, the clearenv() function returns  0  (zero).
       Otherwise, it returns -1.

       If  environ  has	 been  modified	 by  anything other than the putenv(),
       getenv(), or clearenv() functions, then clearenv() will return an error
       and the process environment will remain unchanged.

SEE ALSO
       Functions: exec(2), getenv(3), putenv(3)

								   clearenv(3)

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