gistfile1.txt

rclark@mercury:~$ ./tmp/test_yaml.rb ./tmp/test_yaml.yml 
yaml is a Hash
{"ulimit"=>{"user"=>nil, "ulimit_config"=>[{"domain"=>"a", "type"=>"a", "item"=>"a", "value"=>0}, {"domain"=>"b", "type"=>"b", "item"=>"b", "value"=>1}]}}

rclark@mercury:~$ cat tmp/test_yaml.rb
#!/usr/bin/env ruby
require 'yaml'
 
yaml = YAML::load(File.open(ARGV[0]))
puts "yaml is a #{yaml.class.name}"
puts yaml.to_s