如何在 Powershell 中转义反斜杠 [英] How to escape a backslash in Powershell

问题描述

我正在编写一个 powershell 程序来使用

I'm writing a powershell program to replace strings using

-replace "$in", "$out"

它不适用于包含反斜杠的字符串，我该如何转义它?

It doesn't work for strings containing a backslash, how can I do to escape it?

推荐答案

-replace 运算符使用正则表达式，将反斜杠视为特殊字符.您可以使用双反斜杠来获得文字单反斜杠.

The -replace operator uses regular expressions, which treat backslash as a special character. You can use double backslash to get a literal single backslash.

就您而言，由于您使用的是变量，因此我假设您在设计时不知道内容.在这种情况下，您应该通过 [RegEx]::Escape():

In your case, since you're using variables, I assume that you won't know the contents at design time. In this case, you should run it through [RegEx]::Escape():

-replace [RegEx]::Escape($in), "$out"

该方法将任何对正则表达式来说特殊的字符转义为文字匹配所需的任何字符(其他特殊字符包括 .,$,^、()、[] 等.

That method escapes any characters that are special to regex with whatever is needed to make them a literal match (other special characters include .,$,^,(),[], and more.

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