sudo generate_nginx_config ‐‐example > config.yml
/usr/lib/ruby/1.8/yaml.rb:143:in `initialize': No such file or directory - ‐‐example (Errno::ENOENT)
        from /usr/lib/ruby/1.8/yaml.rb:143:in `open'
        from /usr/lib/ruby/1.8/yaml.rb:143:in `load_file'
        from /usr/lib/ruby/gems/1.8/gems/nginx_config_generator-1.0/bin/../lib/nginx_config_generator.rb:19
        from /usr/lib/ruby/gems/1.8/gems/nginx_config_generator-1.0/bin/generate_nginx_config:2:in `load'
        from /usr/lib/ruby/gems/1.8/gems/nginx_config_generator-1.0/bin/generate_nginx_config:2
        from /usr/bin/generate_nginx_config:16:in `load'
        from /usr/bin/generate_nginx_config:16