script to generate Ethereum private key, public key, and address

generateEthereumKey.sh

#!/bin/bash

#Libs used for keccak-256sum
#https://github.com/maandree/libkeccak.git
#https://github.com/maandree/argparser.git
#https://github.com/maandree/sha3sum.git

# Generate the private and public keys
KEY="$(openssl ecparam -name secp256k1 -genkey -noout | openssl ec -text -noout 2> /dev/null)"
echo "$KEY"

# Extract the public key and remove the EC prefix 0x04
PUB="$(echo "$KEY" | grep pub -A 5 | tail -n +2 | tr -d '\n[:space:]:' | sed 's/^04//')"
echo "Public key:" $PUB

# Extract the private key and remove the leading zero byte
PRIV="$(echo "$KEY" | grep priv -A 3 | tail -n +2 | tr -d '\n[:space:]:' | sed 's/^00//')"
echo "Private key:" $PRIV

# Generate the hash and take the address part
ADDRESS="$(echo "$PUB" | keccak-256sum -x -l | tr -d ' -' | tail -c 41)"
echo "Address:" $ADDRESS