Generate private bitcoin keys from 15 word combinations of words, input number of keys to create

phrase-keys.sh

#!/usr/bin/env bash
# first input should be number of private keys to generate

for ((i=1;i<=$1;i++));
do
  WORDS=15; LC_ALL=C grep -x '[a-z]*' /usr/share/dict/words \
    | shuf --random-source=/dev/urandom -n ${WORDS} | paste -sd " " \
    | sha256sum | cut -f 1 -d " "
done