Check the current balance from a list of private bitcoin keys

check-wallet.sh

#!/usr/bin/env bash
# For keys in format of 66 chars starting with 0x

# Source script from: https://github.com/grondilu/bitcoin-bash-tools.git
source ./bitcoin.sh

while read k; do
  WALLET=$(newBitcoinKey $k \
    | grep bitcoin\ address \
    | cut -f 2 -d ":" \
    | tr -d " ")
  wget -qO- blockchain.info/rawaddr/$WALLET 2>&1 | grep -Po '"final_balance":\K[0-9]+'
done < keys.txt