Which server is it running on?

Sometimes you are in the need to check where a website is running. There are difficult ways and services which can help you with that, but its also built in to your system to check this.

curl -v https://silvandiepen.nl 2>&1 | grep -i server

To make this easy to use in your terminal, you can add this to your bash_profile:

server(){
    curl -v $1 2>&1 | grep -i server
}

Now you can just run:

server https://silvandiepen.nl