Substitutions

Here are some variable substitutions:

Variable	Defined in
Front Matter Value	Front Matter
A key with dashes	Front Matter

Substitutions should work in code blocks too.

wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.17.0-linux-x86_64.tar.gz
wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.17.0-linux-x86_64.tar.gz.sha512
shasum -a 512 -c elasticsearch-7.17.0-linux-x86_64.tar.gz.sha512
tar -xzf elasticsearch-7.17.0-linux-x86_64.tar.gz
cd elasticsearch-7.17.0/

Here is a variable with dashes: A key with dashes