#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/select.h>
#include <sys/time.h>
#include <sys/fcntl.h>
#include <unistd.h>
#include <termios.h>

int
main(int argc, char **argv)
{
	fd_set infd;
	struct timeval tv;
	int ret;
	int fd;

	fd = open("/dev/urandom",O_NONBLOCK|O_NOCTTY,00); 
	FD_ZERO(&infd);
	FD_SET(fd, &infd);
	tv.tv_sec = 10;
	tv.tv_usec = 10000;
	ret = select(fd + 1, &infd, NULL, NULL, &tv);
	if (ret == -1) {
		perror("select");
		exit(EXIT_FAILURE);
	}
	printf("select returned %d\r\n", ret);

	exit(EXIT_SUCCESS);
}