使用powershell返回环境变量的值 [英] Return value of environment variable with powershell

问题描述

我在一个变量中有一个环境变量的名称，我想获取该值.我怎么做?我试过了:

I have the name of an environment variable in a variable and I want to get the value. How do I do that? I've tried:

PS C:\Users\Joe> $v="USERDOMAIN"
PS C:\Users\Joe> "$env:$v"
At line:1 char:2
+ "$env:$v"
+  ~~~~~
Variable reference is not valid. ':' was not followed by a valid variable name character. Consider using ${} to
delimit the name.
    + CategoryInfo          : ParserError: (:) [], ParentContainsErrorRecordException
    + FullyQualifiedErrorId : InvalidVariableReferenceWithDrive

PS C:\Users\Joe> "$env:$($v)"
At line:1 char:2
+ "$env:$($v)"
+  ~~~~~
Variable reference is not valid. ':' was not followed by a valid variable name character. Consider using ${} to
delimit the name.
    + CategoryInfo          : ParserError: (:) [], ParentContainsErrorRecordException
    + FullyQualifiedErrorId : InvalidVariableReferenceWithDrive

推荐答案

两行

$v = "Path"
(get-item env:$v).Value

一行

iex ('$env:' + $x)

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