Is there a way to check whether a jekyll site is being served locally?

Question

I\'d like to add the following line to my head.html solely when running jekyll serve locally:

Answer 1

When you do a jekyll serve locally the default {{ jekyll.environment }} variable is set to "development".

You can then do a simple :

{% if jekyll.environment == "development" %}
  
{% endif %}

If you want to run jekyll on another server, with another environment value, you can set a JEKYLL_ENV system environment variable to whatever you want.

Setting this variable at runtime can be done like this :

JEKYLL_ENV=production jekyll serve

Note : On Github Pages, jekyll.environment is set to production.