请教shell批量文件中加入代码……

有狼出没

有个需求：
在一批静态页面的倒数第三行加入如下的统计代码：

1. <script type="text/javascript">
   
2. var _bdhmProtocol = (("https:" == document.location.protocol) ? " https://" : " http://");
   
3. document.write(unescape("%3Cscript src='" + _bdhmProtocol + "hm.baidu.com/h.js%3Ff23a13a09954dada8fad3e0691dfcf0f'  type='text/javascript'%3E%3C/script%3E"));
   
4. </script>
   

复制代码

请大侠帮忙！

zhouzhen_cu

for file in *.html;do tac "$file" | sed '3 i\you want' | tac > "$file.bak";done
find . -name "*.html.bak" -print | sed -e 's/\(.*\).html.bak/mv & \1.html/' | bash