This is a really small demo of how you can boot up an Ethereum Private Network.
There are 2 nodes in the network, but easy to increase.
# Creates a few accounts on both nodes
# and initializes the chain
$ ./init.sh
# start the nodes
# and makes them add each other as peers
$ ./run-nodes.sh
# now your network is ready
# the second-node is mining, the first-node is not
# first-node has 8545 & 8546 ports open
# so you can connect to it through RPC & WebSockets (WS)
# now to stop the nodes
$ ./stop-nodes.shMIT