#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>

int main(int argc, char** argv){
	if (args != 2){
		printf("Usage : %s <file>", argv[0]);
		return EXIT_FAILURE;
	}
	int p[2], fd;
	fd = open(argv[1], 
	pipe(p);
	execl("/usr/bin/ls", "ls", "-i", "-l", "/tmp", NULL);
	dup2(p[0],0);