Keyboard input/Obtain a Y or N response
my $TTY = open("/dev/tty");
sub prompt-char($prompt) {
ENTER shell "stty raw -echo min 1 time 1";
LEAVE shell "stty sane";
print $prompt;
$TTY.read(1).decode('latin1');
}
say so prompt-char("Y or N? ") ~~ /:i y/;