如何让 PowerShell 4 cmdlet(例如 Test-NetConnection)在 Windows 7 上运行? [英] How do I get PowerShell 4 cmdlets such as Test-NetConnection to work on Windows 7?

问题描述

情况.在 Windows 7 SP1 机器上，我已更新为 Windows6.1-KB2819745-x64-MultiPkg.msu.此外，在 PowerShell 中，$PSVersionTable 现在报告PSVersion 4.0".

The situation. On a Windows 7 SP1 machine, I have updated with Windows6.1-KB2819745-x64-MultiPkg.msu. Furthermore, in PowerShell $PSVersionTable now reports ‘PSVersion 4.0’.

目前，我的结论是，许多 PowerShell 4 cmdlet(例如 Test-NetConnection)只能在 Windows 8.1 上运行.但是，我想知道是否有一种解决方法可以在我的 Windows 7 机器上导入 PowerShell 4 模块.

At present, my conclusion is that many PowerShell 4 cmdlets such Test-NetConnection, will only work on Windows 8.1. However, I was wondering if there was a work-around whereby I could import PowerShell 4 modules on my Windows 7 machine.

推荐答案

你不能.它们依赖于较新操作系统(8.0 或 8.1)的底层功能，并且无法移植回 Windows 7 .另一种方法是编写您自己的函数/模块，以使用 .NET 框架方法复制新的 cmdlet.

You cannot. They rely on the underlying features of the newer OS (8.0 or 8.1) and cannot be ported back to Windows 7 . The alternative is to write your own functions / modules to replicate the new cmdlets using .NET framework methods.

例如，Get-FileHash cmdlet 在 PowerShell 4.0 中是单行的，但要在 2.0 中复制，我们必须使用 .NET.

For instance, the Get-FileHash cmdlet is a one-liner in PowerShell 4.0, but to replicate in 2.0 we have to use .NET.

PowerShell v4

PowerShell v4

Get-FileHash -Algorithm SHA1 "C:\Windows\explorer.exe"

PowerShell v2

PowerShell v2

$SHA1 = new-object -TypeName System.Security.Cryptography.SHA1CryptoServiceProvider
$file = [System.IO.File]::Open("C:\Windows\explorer.exe",[System.IO.Filemode]::Open, [System.IO.FileAccess]::Read)
[System.BitConverter]::ToString($SHA1.ComputeHash($file)) -replace "-",""
$file.Close()

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