Jekyll: Development and Production environments

gistfile1.txt

http://stackoverflow.com/questions/27386169/change-site-url-to-localhost-during-jekyll-local-development

Let's say we have the local site served at http://localhost and the production site served at https://username.github.io/myProject.

We leave the _config.yml with url: https://username.github.io and baseurl: /myProject

We create a new _config_dev.yml with only url: https://localhost and baseurl: ""

Now to test locally :

jekyll build --config _config.yml,_config_dev.yml
or

jekyll build --config _config.yml,_config_dev.yml --watch
When pushed on production, the jekyll build command will use the default _config.yml.