chef

https://github.com/opscode/chef

Ruby

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

Chef::Client#generate_guid

Ensure that we have a GUID for this node
If we've got the proper configuration, we'll simply set that.
If we're registed with the data collector, we'll migrate that UUID into our configuration and use that
Otherwise, we'll create a new GUID and save it

Source | Google | Stack overflow

Edit

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

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Chef--Client-generate_guid-for-pr

# Commit to git

git add lib/chef/client.rbgit commit -m "better docs for Chef::Client#generate_guid"

# 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--Client-generate_guid-for-pr

hub pull-request

# Celebrate!