View gist:4823f8833c89b4492455
// after geth1.x installed.
mkdir /tmp/eth/70
geth console
personal.newAccount('password')
eth.accounts[0]
// you can check the eth.accounts[0] address, copy it and memo to somewhere
// control + c then escape from geth console.
// next make the private net genesisblock json file.
vim privatenet_genesis_block.json