Linux Command Line Check Keyboard Any Press

keyboard_press.c

#if defined(OS_LINUX) || defined(OS_MACOSX)
// Linux (POSIX) implementation of _kbhit().
// Morgan McGuire, morgan@cs.brown.edu
static int _kbhit() {
	static const int STDIN = 0;
	static int initialized = 0;
	int bytesWaiting;

	if (!initialized) {
		// Use termios to turn off line buffering
		struct termios term;
		tcgetattr(STDIN, &term);
		term.c_lflag &= ~ICANON;
		tcsetattr(STDIN, TCSANOW, &term);
		setbuf(stdin, NULL);
		initialized = 1;
	}
	ioctl(STDIN, FIONREAD, &bytesWaiting);
	return bytesWaiting;
}
static char _getch(void) {
	char c;
	if (fread(&c, 1, 1, stdin) < 1) return 0;
	return c;
}
#endif


static char get_keystroke(void)
{
	if (_kbhit()) {
		char c = _getch();
		if (c >= 32) return c;
	}
	return 0;
}