#include <unistd.h>
#include <fcntl.h>

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

	if (argc < 2)
		write(2, "error", 5);

	if ((fd = open(argv[1], O_RDONLY | O_NONBLOCK)) == -1)
		write(2, "error", 5);

	while((read(fd, &c, 1) == 1) && (c != '\n'))
		write(1, &c, 1);

	return 0;
}