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clearenv(3)
NAME
  clearenv - Clears the process environment

LIBRARY
  Standard C Library (libc.a)

SYNOPSIS

  #include <stdlib.h>
  int clearenv ( void );

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
  AES Support Level:
		 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.

RELATED INFORMATION
  Functions: exec(2), getenv(3), putenv(3)