Swap script creator

#begin optional swap section
echo "Setting up disk swap..."
free -h
sudo fallocate -l 4G /swapfile
ls -lh /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile
echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab
sudo bash -c "echo 'vm.swappiness = 10' >> /etc/sysctl.conf"
free -h
echo "SWAP setup complete..."
#end optional swap section