如何使用PowerShell替换换行符？

Given test.txt containing:

鉴于test.txt包含：

test
message

I want to end up with:

我想最终得到：

testing
a message

I think the following should work, but it doesn't:

我认为以下内容应该有效，但它不会：

Get-Content test.txt |% {$_-replace "t`r`n", "ting`r`na "}

How can I do a find and replace where what I'm finding contains CRLF?

我怎样才能找到并替换我所发现的包含CRLF的地方？

4 个解决方案

#1

A CRLF is two characters, of course, the CR and the LF. However, `n consists of both. For example:

CRLF是两个字符，当然还有CR和LF。但是，`n由两者组成。例如：

PS C:\> $x = "Hello
>> World"

PS C:\> $x
Hello
World
PS C:\> $x.contains("`n")
True
PS C:\> $x.contains("`r")
False
PS C:\> $x.replace("o`nW","o There`nThe W")
Hello There
The World
PS C:\>

I think you're running into problems with the `r. I was able to remove the `r from your example, use only `n, and it worked. Of course, I don't know exactly how you generated the original string so I don't know what's in there.

我认为你遇到了`r的问题。我能够从你的例子中删除`r，只使用`n，并且它有效。当然，我不确切知道你是如何生成原始字符串所以我不知道那里有什么。

#2

In my understanding, Get-Content eliminates ALL newlines/carriage returns when it rolls your text file through the pipeline. To do multiline regexes, you have to re-combine your string array into one giant string. I do something like:

根据我的理解，Get-Content在通过管道滚动文本文件时会消除所有换行/回车。要执行多行正则表达式，您必须将字符串数组重新组合成一个巨大的字符串。我做的事情如下：

$text = [string]::Join("`n", (Get-Content test.txt))
[regex]::Replace($text, "t`n", "ting`na ", "Singleline")

Clarification: small files only folks! Please don't try this on your 40 GB log file :)

澄清：小文件只有人！请不要在40 GB的日志文件中尝试这个:)

#3

With -Raw you should get what you expect

随着-Raw你应该得到你期望的

#4

You can use "\\r\\n" also for the new line in powershell. I have used this in servicenow tool.

您也可以将“\\ r \\ n”用于powershell中的新行。我在servicenow工具中使用过它。

In my case "\r\n" s not working so i tried "\\r\\n" as "\" this symbol work as escape character in powershell.

在我的情况下“\ r \ n”s不起作用，所以我尝试“\\ r \\ n”作为“\”这个符号在powershell中作为转义字符。

#1