#!/usr/bin/env sh

if [ $# -eq 0 ]; then
    echo "hex2bin: missing operand after 'hex2bin'"
    echo "USAGE: hex2bin n [...]"
    exit 1
fi

for var in "$@"
do
    code=$(echo "${var/0[xX]/}" | tr  "[:lower:]" "[:upper:]")
    converted=$(echo "ibase=16; obase=2; $code" | bc)
    echo -n "$converted "
done

echo