#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/ioctl.h>

int main() {
	char shift_state;
	shift_state = 6;
	if (ioctl(0, TIOCLINUX, &shift_state) == -1)
		err(1, "could not get shift state");
	return !shift_state;
}