Ruby loading config (yaml) file in same dir as source

You should get path of the current file by:

cnf = YAML::load_file(File.join(File.dirname(File.expand_path(__FILE__)), 'config.yml'))

EDIT:

Since Ruby 2.0 you can simplify that and use:

cnf = YAML::load_file(File.join(__dir__, 'config.yml'))

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