Create Ethereum Private NetWork

install Ethereum

Mac OSX:

see  https://github.com/ethereum/go-ethereum/wiki/Installation-Instructions-for-Mac

Ubuntu:

see  https://github.com/ethereum/go-ethereum/wiki/Installation-Instructions-for-Ubuntu

ensure your installation worked

geth version

you will see:
                Geth
                Version: 1.8.2-stable
                Git Commit: b8b9f7f4476a30a0aaf6077daade6ae77f969960
                Architecture: amd64
                Protocol Versions: [63 62]
                Network Id: 1
                Go Version: go1.9.4
                Operating System: linux
                GOPATH=/home/qydev/go
                GOROOT=/usr/local/go

init env

cd you src

git clone https://github.com/Xib1uvXi/eth_pn.git
cd eth_pn
./init_pn_env.sh set_your_etherbase_password

start private network

you first start private network on linux:

./console.sh 1

on mac:

./console.sh 2