<bitcoin-ver>-linux/bin/64>> ./bitcoind -regtest -daemon

#!/bin/bash
bitcoind -server -listen -port=17591 -rpcuser=bitcoinrpc -rpcpassword=P$SECONDS -rpcport=16591 -datadir=$HOME/regtest/A/ -connect=localhost:17592 -regtest -pid=$HOME/regtest/A/.pid -daemon -debug
bitcoind -server -listen -port=17592 -rpcuser=bitcoinrpc -rpcpassword=P$SECONDS -rpcport=16592 -datadir=$HOME/regtest/B/ -connect=localhost:17593 -regtest -pid=$HOME/regtest/B/.pid -daemon -debug
bitcoind -server -listen -port=17593 -rpcuser=bitcoinrpc -rpcpassword=P$SECONDS -rpcport=16593 -datadir=$HOME/regtest/C/ -connect=localhost:17594 -regtest -pid=$HOME/regtest/C/.pid -daemon -debug
bitcoind -server -listen -port=17594 -rpcuser=bitcoinrpc -rpcpassword=P$SECONDS -rpcport=16594 -datadir=$HOME/regtest/D/ -connect=localhost:17595 -regtest -pid=$HOME/regtest/D/.pid -daemon -debug
bitcoind -server -listen -port=17595 -rpcuser=bitcoinrpc -rpcpassword=P$SECONDS -rpcport=16595 -datadir=$HOME/regtest/E/ -connect=localhost:17591 -regtest -pid=$HOME/regtest/E/.pid -daemon -debug

#!/bin/bash
sudo killall --regex bitcoin.*

mkdir $HOME/regtest/A/
mkdir $HOME/regtest/B/
mkdir $HOME/regtest/C/
mkdir $HOME/regtest/D/
mkdir $HOME/regtest/E/

regtest=1
server=1
 # Alice connects to Cory
connect=localhost:18333

regtest=1
server=1
 # Bob connects to Alice
connect=localhost:18444

regtest=1
server=1
 # Cory connects to nobody