find -name '*.php'|xargs grep 'include'//在当前目录及其子目录的php文件中查找include字符串
find . -name '*.php' -exec grep -i -nH "include" {} \;//同上
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参考来源：http://www.ai7.org/wp/html/653.html http://yecheng110.blog.hexun.com/10572550_d.html
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