#include <stdio.h>
#include <sys/time.h>
time_t
getunixutime()
{
	struct timeval tp;
	gettimeofday(&tp, NULL);
	return tp.tv_usec;
}

int
main(int argc, char **argv)
{
	FILE *fd;
	unsigned char c;

	fd = fopen("/dev/urandom", "r");
	while (1) {
		if (getunixutime() % 2)
			printf(" ");
		printf("%02x", getc(fd));
	}

	fclose(fd);
}