For Amazon EC2 instances, you may be considering sudo for the apt-get and the cp commands and maybe more, since you are not root on them.
echo "Installing libraries..."
apt-get install build-essential curl git libboost-all-dev libdb++5.3-dev libdb5.3++-dev libminiupnpc-dev libssl-dev m4 -y
echo "Installing libraries..."
sudo apt-get install build-essential curl git libboost-all-dev libdb++5.3-dev libdb5.3++-dev libminiupnpc-dev libssl-dev m4 -y
cp primecoind /usr/local/bin/
sudo cp primecoind /usr/local/bin/