$x = 0b1111_1110_1101_1100_1011_1010_1001_1000_0111_0110_0101_0100_0011_0011;; $y = 0b0000_0001_0010_0011_0100_0101_0110_0111_1000_1001_1010_1011_1100_1101;; printf "%064b\n", $x & $y;; 0000000000000000000000000000000000000000000000000000000000000001