我需要检测存在无效(非 ASCII)utf-8、Unicode 或二进制字符的损坏文本文件。

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我尝试过的:

iconv -f utf-8 -t utf-8 -c file.csv 

这会将文件从 utf-8 编码转换为 utf-8 编码，而 -c 用于跳过无效的 utf-8 字符。但是最后这些非法字符仍然被打印出来。 bash on linux 或其他语言还有其他解决方案吗？

最佳答案

假设您的语言环境设置为 UTF-8(参见 locale 输出)，这可以很好地识别无效的 UTF-8 序列:

grep -axv '.*' file.txt

解释(来自grep man page):

• -a, --text:将文件视为文本，必要时防止 grep 一旦发现无效字节序列(不是 utf8)就中止
• -v, --invert-match:反转输出显示不匹配的行
• -x '.*'(--line-regexp):表示匹配由任意utf8字符组成的完整行。

因此，会有输出，即包含无效的非utf8字节序列的行(因为反转-v)

https://stackoverflow.com/questions/29465612/