Running a PowerShell command for multiple remote hosts and displaying efficiently

Question

I'm trying to determine which of my servers from a list (for example, servers.txt) have .NET 4.5 installed and what version of PowerShell. I have standalone commands which will tell me this on a single box -

**

**PS D:\tools> Get-ItemProperty 'HKLM:\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Client' Version : 4.5.51641 CBS : 1 TargetVersion : 4.0.0 Install : 1 InstallPath : C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ Servicing : 0 Release : 378675 PSPath : Microsoft.PowerShell.Core\Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Client PSParentPath : Microsoft.PowerShell.Core\Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4 PSChildName : Client PSDrive : HKLM PSProvider : Microsoft.PowerShell.Core\Registry**

** Which shows at the top (Version) that it is indeed 4.5. Is there a way to just display the Version field and the hostname (or computername) in a table format?

Also, the same for the below command which gives you your version of PowerShell -

PS D:\tools> get-host |select-object version Version ------- 4.0

I actually did put the full path. Here is my screen after displaying the txt file and then running the command -

PS D:\tools> type h:\servers.txt OPP-HOLD zOPP-SQL12HAa zOPP-SQLESMA PS D:\tools> Get-content -path h:\servers.txt | where {$_-match "\S"} | foreach Get-ItemProperty -ComputerName $_ 'HKLM: \SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Client' -name Version foreach : Input name "Get-ItemProperty" cannot be resolved to a method. At line:1 char:60 + Get-content -path h:\servers.txt | where {$_-match "\S"} | foreach Get-ItemPrope ... + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : InvalidArgument: (OPP-HOLD:PSObject) [ForEach-Object], PSArgumentException + FullyQualifiedErrorId : MethodNotFound,Microsoft.PowerShell.Commands.ForEachObjectCommand foreach : Input name "Get-ItemProperty" cannot be resolved to a method. At line:1 char:60 + Get-content -path h:\servers.txt | where {$_-match "\S"} | foreach Get-ItemPrope ... + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : InvalidArgument: (zOPP-SQL12HAa:PSObject) [ForEach-Object], PSArgumentException + FullyQualifiedErrorId : MethodNotFound,Microsoft.PowerShell.Commands.ForEachObjectCommand foreach : Input name "Get-ItemProperty" cannot be resolved to a method. At line:1 char:60 + Get-content -path h:\servers.txt | where {$_-match "\S"} | foreach Get-ItemPrope ... + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : InvalidArgument: (zOPP-SQLESMA:PSObject) [ForEach-Object], PSArgumentException + FullyQualifiedErrorId : MethodNotFound,Microsoft.PowerShell.Commands.ForEachObjectCommand

Community · Accepted Answer · 2017-05-23 12:12:40Z

Invoke-Command is what you are asking for. The other answer is not addressing your data requests from the remote hosts.

$computers = Get-Content servers.txt Invoke-Command -ComputerName $computers -ScriptBlock{ $powerShellVersion = get-host | select-object -expandproperty version $frameWorkVersion = Get-ItemProperty 'HKLM:\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Client' | select-object -expandproperty version New-Object psobject -Property @{ "Computer" = $singleComputer "PowerShell Version" = $powerShellVersion "Framework Version" = $frameWorkVersion } }

This untested code could be simplified, but my goal is for better understaning. For each server run the scriptblock that will return the PowerShell version and .NET version in a custom object. This should work on PowerShell 3.0. Be aware of the caveats of checking Framework version like this. If you are just looking for 4.5 this should work. You might need to add an -erroraction if 4.5 is not installed.

This isn't as efficient as passing the computer names directly to Invoke-Command. If you use the -ComputerName parameter with multiple machines, then remote jobs are created on each machine and run in parallel. Here you are running those jobs serially.
@mikez Understood. How would you be able record the computer name in the output? The only reason I did it this way was to keep the computer name saved for output.
PowerShell should automatically attach the computer name the command was run on in the PSComputerName NoteProperty.
Thanks for the help @mikez a little more testing and I think I will have the basics down.
Thx, guys. I copied and pasted into notepad and saved to getpsinfo.ps1 but when I run it I get the following error-

walid toumi · Accepted Answer · 2014-10-02 16:26:54Z

0

Like this ?

Invoke-command -comp ( cat servers.txt ) -command { get-host} | where { $_.version -eq '4.5' } | format-table *computer*, version

answered Oct 2, 2014 at 16:26

walid toumi

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1 Comment

Matt Over a year ago

Invoke-Command is the right way to go however I think the OP is looking for both commands output which you dont have. Also I dont think there is a PowerShell 4.5 version

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