This is a really great help - thanks for doing this. I am totally new to Linux but I'm trying to learn, could you break down what the commands in the first section are doing?

specifically:
sudo fallocate -l 4G /swapfile

sudo chmod 600 /swapfile

sudo mkswap /swapfile

sudo swapon /swapfile

chmod things are changing permissions to files, I can look that up

./bootstrap.sh --prefix=/usr/local

cmake -DCMAKE_BUILD_TYPE=Release -DENABLE_CONTENT_PATCHING=OFF -DLOW_MEMORY_NODE=ON

after that we are installing steem and configuring.

any clarification would be great, thank you once again for taking the time to post about this!!!!