# File src/ruby_supportlib/phusion_passenger/platform_info/apache.rb, line 72
    def self.httpd(options = {})
      apxs2 = options[:apxs2] || self.apxs2
      if env_defined?('HTTPD')
        return ENV['HTTPD']
      elsif apxs2.nil?
        ["apache2", "httpd2", "apache", "httpd"].each do |name|
          command = find_command(name)
          if !command.nil?
            return command
          end
        end
        return nil
      else
        return find_apache2_executable(`#{apxs2} -q TARGET`.strip, options)
      end
    end