Why does VS Code PowerShell terminal map a new drive?

Question

I was making a PowerShell script in Visual Studio Code that used the command Get-PSDrive, and to my surprise, it seemed like while using VS Code, a new drive identical to my C:\ drive called Temp appeared.

I was taken aback by this result as as far as I knew, I only had 2 other drives besides my main C:\ drive connected. I tried to replicate this on other terminals with no success except for PowerShell 7:

_{Windows Terminal PowerShell 5.1}

_{PowerShell 5.1}

_{PowerShell 5.1 (86x)}

_{PowerShell 7 (86x)}

_{Windows Terminal PowerShell 7}

---

当我看到它被 PwSh 7 复制时，我决定用$host变量检查每个 PowerShell 的版本，我看到了更意想不到的东西：

Version          : 5.1.19041.1

_{Windows 终端 PowerShell 5.1}

Version          : 5.1.19041.1

_{PowerShell 5.1}

Version          : 5.1.19041.1

_{PowerShell 5.1 (86x)}

Version          : 7.0.2

_{PowerShell 7 (86x)}

Version          : 7.0.2

_{Windows 终端 PowerShell 7}

这一切看起来都很正常，但是当我检查 VSCode 时$host，我得到了结果

Version          : 2020.6.0

是什么导致了输出的差异

Get-PSDrive | Where-Object {$_.Provider.Name -eq "FileSystem"}

在 PwSh 7、PowerShell 5.1 和 VS Code PwSh 之间？

Answer 1

该Temp:驱动器不是“与我的C:\驱动器相同的新驱动器”；它Root是$Env:Temp，不是C:\。

根据PowerShell Team May 2020 Update，它实际上描述了 PowerShell 7.1，这是在 PowerShell 7.0 中添加的...

在 PowerShell 7.0 中，我们添加了一个temp:PSDrive。这适用于所有平台并自动映射到您的用户临时路径。

顺便说一下，您用来制作这些屏幕截图的命令可以简化为Get-PSDrive -PSProvider FileSystem.