chef

https://github.com/opscode/chef

Ruby

A systems integration framework, built to bring the benefits of configuration management to your entire infrastructure.

Chef::Node#consume_chef_environment

chef_environment when set in -j JSON will take precedence over
-E ENVIRONMENT. Ideally, IMO, the order of precedence should be (lowest to
 highest):
  config_file
  -j JSON
  -E ENVIRONMENT
so that users could reuse their JSON and override the chef_environment
configured within it with -E ENVIRONMENT. Because command line options are
merged with Chef::Config there is currently no way to distinguish between
an environment set via config from an environment set via command line.

Source | Google | Stack overflow

Edit

git clone [email protected]:opscode/chef.git
cd chef
open lib/chef/node.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Chef--Node-consume_chef_environment-for-pr

# Commit to git

git add lib/chef/node.rbgit commit -m "better docs for Chef::Node#consume_chef_environment"

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-Chef--Node-consume_chef_environment-for-pr

hub pull-request

# Celebrate!