在powershell中定义字符串的单引号和双引号有什么区别 [英] What's the difference between single quote and double quote to define a string in powershell

问题描述

一直困扰着我的简单问题:在 powershell 中，我可以像这样定义字符串:

Simple questions that's been bugging me: In powershell, I can define strings like so:

$s1 = "Boogety boo"

或

$s2 = '.net rocks'

解释器有区别吗?

推荐答案

双引号允许变量扩展而单引号不允许:

Double quotes allow variable expansion while single quotes do not:

PS C:\Users\Administrator> $mycolor="red"
PS C:\Users\Administrator> write-output -inputobject 'My favorite color is $mycolor'
My favorite color is $mycolor

来源:http://www.techotopia.com/index.php/Windows_PowerShell_1.0_String_Quoting_and_Escape_Sequences

(我知道1.0版本但原理还是一样)

(I know version 1.0 but the principle is still the same)

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