chef

https://github.com/opscode/chef

Ruby

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

Chef::Platform::ServiceHelpers.service_resource_providers

This helper is mostly used to sort out the mess of different
linux mechanisms that can be used to start services.  It does
not necessarily need to linux-specific, but currently all our
other service providers are narrowly platform-specific with no
alternatives.

NOTE: if a system has (for example) chkconfig installed then we
should report that chkconfig is installed.  The fact that a system
may also have systemd installed does not mean that we do not
report that systemd is also installed.  This module is purely for
discovery of all the alternatives, handling the priority of the
different services is NOT a design concern of this module.

Source | Google | Stack overflow

Edit

git clone [email protected]:opscode/chef.git

cd chef

open lib/chef/platform/service_helpers.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Chef--Platform--ServiceHelpers-service_resource_providers-for-pr

# Commit to git

git add lib/chef/platform/service_helpers.rbgit commit -m "better docs for Chef::Platform::ServiceHelpers.service_resource_providers"

# 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--Platform--ServiceHelpers-service_resource_providers-for-pr

hub pull-request

# Celebrate!