/***********************************************************
 *
 * env_exec.c
 *
 * 4/15/02 Jeff Ondich
 *
 * Illustrates environment variables after a fork and
 * exec.
 *
 **********************************************************/

#include	<stdio.h>
#include	<stdlib.h>
#include	<unistd.h>
#include	<sys/types.h>
#include	<sys/wait.h>


int main()
{
	int		status;
	pid_t	pid;

  /* Create the new process. */

	pid = fork();

	/* Parent */
	if( pid != 0 )
	{
		printf( "Parent just created child, ID %d\n", pid );
		fflush( stdout );
		pid = wait( &status );
		printf( "My child ID %d just exited with status %d\n", pid, WEXITSTATUS(status) );
		fflush( stdout );
	}

	/* Child */
	else
	{
		printf( "Process %d is about to execute 'environment'\n", getpid() );
		fflush( stdout );
		execlp( "environment", (char *) 0 );
	}

	return( 0 );
}