Hex to Binary conversion in bash

Question

I\'m trying to convert a series of bytes from hex to bin using bash. but I keep getting (seemingly random) \"(standard_in) 1: syntax error\" replies from the following code:

Answer 1

Try this:

for j in c4 97 91 8c 85 87 c4 90 8c 8d 9a 83 81
do
    BIN=$(echo "obase=2; ibase=16; ${j^^}" | bc )
    echo $BIN
done