clearenv(3) — Subroutines
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.