using bash: write bit representation of integer to file

Question

I have a file with binary data and I need to replace a few bytes in a certain position. I\'ve come up with the following to direct bash to the offset and show me that it fou

Answer 1

If you're willing to rely on bc (which is fairly common)

echo -e "ibase=16\n obase=2 \n A1" | bc -q

might help.