在执行diff时缺少新行

Question

如果我使用命令diff <file1> <file2>，我会收到一些警告的结果;请看下面：

      diff: Missing newline at the end of file file1
      diff: Missing newline at the end of file file2  
      <param-value>net:12569</param-value>
      <param-value>net:12342</param-value>

请告诉我＆＃34;是否缺少新线＆＃34;是警告或错误。