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

int main(int argc, char* argv[])
{
	int pid;
	int stat;

	if (argc < 2) {
		printf("Usage: a.out command\n");
		exit(0);
	}

	if (fork() == 0) {
		// if (execv(argv[1], &argv[1]) == -1) exit(19); 
		if (execv(argv[1], &argv[1]) == -1) exit(-1);

		printf("abcde\n");

	} else {
		pid = wait(&stat);
		if (stat >> 8 == 0xff) {
			printf("command failed\n");
		} else 
			printf("child pid = %d, status = %d\n", pid, stat>>8);
	}
	return(EXIT_SUCCESS);
}