cookbooks/fb_nsswitch/templates/default/nsswitch.conf.erb (5 lines of code) (raw):
# This file is maintained by Chef. Do not edit, all changes will be
# overwritten. See fb_nsswitch/README.md
<% node['fb_nsswitch']['databases'].to_hash.each do |db, sources| -%>
<%= db %>: <%= sources.join(' ') %>
<% end -%>