Chapter 6.
echo export NODE_HOME=$HOME/cardano-my-node >> $HOME/.bashrc
source $HOME/.bashrc
mkdir -p $NODE_HOME
Copy from your hot environment , also known as your block producer node, a copy of the cardano-cli binaries to your cold environment , this air-gapped offline machine.
In order to remain a true air-gapped environment, you must move files physically between your cold and hot environments with USB keys or other removable media.