Install Ethereum Private Node on Ubuntu

install_private_node.sh

sudo apt-get install -y software-properties-common
sudo add-apt-repository -y ppa:ethereum/ethereum
sudo apt-get -y update
sudo apt-get install -y ethereum

cd ~
mkdir priv
cd priv
mkdir config
mkdir data
mkdir scripts

cd ~/priv/config
echo {
   "config": {
        "chainId": 424242,
        "homesteadBlock": 0,
        "eip155Block": 0,
        "eip158Block": 0
    },
    "nonce": "0x0000000000000042",
    "mixhash": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "difficulty": "0x400",
    "alloc": {},
    "coinbase": "0x3333333333333333333333333333333333333333",
    "timestamp": "0x00",
    "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "gasLimit": "0xffffffff",
    "alloc": {
        "8df9a875a174b3bc565e6424a0050ebc1b2d1d81": { "balance": "500042" },
        "g41c74c9ae680c1aa78f42e5647a62f353b7bddf": { "balance": "600042" }
    }
} > CustomGenesis.json

cd ~/priv/scripts/
touch INIT_PRIV_CHAIN.sh
chmod +x INIT_PRIV_CHAIN.sh
echo 
#!/bin/sh

DATADIR=/home/$USER/priv/data
GENESIS=/home/$USER/priv/config/CustomGenesis.json
NETWORKID=42
IDENTITY="ISCPrivateChain"
PORT=30303
RPCPORT=8000

# Initialize the private blockchain
geth --networkid $NETWORKID --datadir=$DATADIR --identity $IDENTITY --port $PORT --rpcport $RPCPORT init $GENESIS > INIT_PRIV_CHAIN.sh