如何查找不以换行符/换行符结尾的文件? [英] How do I find files that do not end with a newline/linefeed?

问题描述

如何列出不以换行符结尾的普通文本(.txt)文件名?

How can I list normal text (.txt) filenames, that don't end with a newline?

例如:列出(输出)此文件名:

e.g.: list (output) this filename:

$ cat a.txt
asdfasdlsad4randomcharsf
asdfasdfaasdf43randomcharssdf
$ 

不要列出(输出)该文件名:

and don't list (output) this filename:

$ cat b.txt
asdfasdlsad4randomcharsf
asdfasdfaasdf43randomcharssdf

$

推荐答案

使用pcregrep，它是grep的Perl兼容正则表达式版本，它支持使用-M标志的多行模式，该标志可用于在以下情况下匹配(或不匹配):最后一行有换行符:

Use pcregrep, a Perl Compatible Regular Expressions version of grep which supports a multiline mode using -M flag that can be used to match (or not match) if the last line had a newline:

pcregrep -LMr '\n$' .

在上面的示例中，我们说要在当前目录(.)中递归搜索(-r)，列出与(-L)我们多行(-M)正则表达式不匹配的文件，该正则表达式查找文件末尾的换行符('\n$')

In the above example we are saying to search recursively (-r) in current directory (.) listing files that don't match (-L) our multiline (-M) regex that looks for a newline at the end of a file ('\n$')

将-L更改为-l会列出做中包含换行符的文件.

Changing -L to -l would list the files that do have newlines in them.

pcregrep可以使用Homebrew pcre软件包:brew install pcre

pcregrep can be installed on MacOS with the homebrew pcre package: brew install pcre

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