instance method find_cmd

# File railties/lib/rails/commands/dbconsole.rb, line 49
      def find_cmd(*commands)
        dirs_on_path = ENV['PATH'].to_s.split(File::PATH_SEPARATOR)
        commands += commands.map{|cmd| "#{cmd}.exe"} if RbConfig::CONFIG['host_os'] =~ /mswin|mingw/

        full_path_command = nil
        found = commands.detect do |cmd|
          dir = dirs_on_path.detect do |path|
            full_path_command = File.join(path, cmd)
            File.executable? full_path_command
          end
        end
        found ? full_path_command : abort("Couldn't find database client: #{commands.join(', ')}. Check your $PATH and try again.")
      end