#include <unistd.h>
#include <string.h>
#include <errno.h>

#include <stdio.h>

int
main (int argc, char * * argv)
{
	char * prog = argc > 1 ? argv [1] : "notepad";
	int res;

	printf ("Calling exec %s\n", prog);

/*	res = execlp (prog, "-", 0);	*/
	res = execvp (prog, & argv [1]);
	if (res < 0) {
		fprintf (stderr, "errno %d - ", errno);
		perror ("exec");
	}
}