在微软的技术论坛上看到这个脚本，感觉自己的PowerShell 理念，还有很多不熟悉，好好研究了一下这个脚本，记录在自己的Blog上。
怎样同时为网络中很多电脑安装Dotnet Framework 4.0。
1 $Hosts= Get-Content -Path "C:\hosts.txt"
2 [ScriptBlock] $script = {
3 #$ErrorActionPreference = "Stop"
4 $MachineName= gc env:computername
5 C:\Windows\System32\net.exe use "\\RemoteMachine\SharedFolder\DotnetFrameWork 4.0" password /user:domain\username
6 if(!(Test-Path "C:\Temp"))
7 {
8 New-Item -Path "C:\Temp" -ItemType directory
9 }
10 Copy-Item -Path "\\RemoteMachine\SharedFolder\DotnetFrameWork 4.0\dotNetFx40_Full_x86_x64.exe" -Destination "C:\Temp" -Force -Recurse
11 function LaunchProcessAndWait([string] $FileName, [string] $CommandLineArgs)
12 {
13 #preferences
14 $ErrorActionPreference="Stop"
15 try
16 {
17 Write-Host "Starting process $FileName on machine $($MachineName)"
18 $p = Start-Process -FilePath $FileName -ArgumentList $CommandLineArgs -Wait -PassThru
19 Write-Host "The process $FileName exit code is $($p.exitcode)"
20 return $p.ExitCode
21 }
22 catch
23 {
24 Write-Host "Error launching process $FileName"
25 throw
26 }
27 }
28 LaunchProcessAndWait "C:\Temp\dotNetFx40_Full_x86_x64.exe" "/I /q"
29 }
30 $cred = Get-Credential
31 $sessions = $Hosts | New-PSSession -Credential $cred
32 Invoke-Command -ScriptBlock $script -Session $sessions
33 $sessions | Remove-PSSession
另外的解决方法：
-CredSSP 非常重要. 否则安装会被远程机的 UNC 阻止而失败，需要为所有的远程机启用 CredSSP. This works only from Vista SP1 onwards since CredSSP is not available on XP SP3.
代码
1 $cred = Get-Credential
2 Invoke-Command -ComputerName "Server01" -ScriptBlock { Start-Process -FilePath "\\Staging\Share\dotNetFx40_Full_x86_x64.exe" -ArgumentsList "/q /norestart" } -CredSSP -Crdential $cred
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