gethprivate

Initialising
geth --identity "SohanNode" --rpc --rpccorsdomain "*" --datadir ~/privategeth --port "30303" --nodiscover --networkid 2018 init ~/privategeth/genesis.json

Starting
geth --identity "SohanNode" --rpc --rpccorsdomain "*" --datadir ~/privategeth --port "30303" --nodiscover --networkid 2018 --maxpeers 0 mine

genesis.json

{
  "coinbase"   : "0x67f49edf9b0f230f069f20dbcf2c9d55bebe74bd",
  "difficulty" : "0x400",
  "extraData"  : "",
  "gasLimit"   : "0x8000000",
  "nonce"      : "0x0000000000000042",
  "mixhash"    : "0x0000000000000000000000000000000000000000000000000000000000000000",
  "parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
  "timestamp"  : "0x00",
  "alloc": {
	"67f49edf9b0f230f069f20dbcf2c9d55bebe74bd": { "balance": "3000000000000000000" },
        "98a927d8623d4f3c887ecb503c4212e627b4fec8": { "balance": "4000000000000000000" }
	},
  "config": {
        "chainId": 15,
        "homesteadBlock": 0,
        "eip155Block": 0,
        "eip158Block": 0
    }
}