Starting up the private network

The initial command to start the private network is shown as follows:

$ ./geth init ~/ethpriv/privategenesis.json --datadir ~/ethpriv/ 

It is assumed that in the home directory there is a directory named ethereprivate which contains the privategenesis.json file.

This will produce an output similar to what is shown in the following screenshot:

Private network initialization

This output indicates that a genesis block has been created successfully. In order for geth to start, the following command can be issued:

$ ./geth --datadir ~/etherprivate/ --networkid 786 --rpc --rpcapi 'web3,eth,net,debug,personal'  --rpccorsdomain '*' 

This will produce the following output:

Starting geth for a private network

Now geth can be attached via Inter-Process Communications (IPC) (IPC is a mechanism to allow communication between processes running...