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Check PowerShell Version

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posted by Tobias
01-25-2010
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Check PowerShell Version
  1. function Test-PSVersion { 
  2. [CmdletBinding()] 
  3. param( 
  4. [parameter(Position=0,ValueFromPipeline=$true)] 
  5. [ValidateNotNullOrEmpty()] 
  6. [String[]] 
  7. $ComputerName = @('.'), 
  8.  
  9. [Parameter()] 
  10. [ValidateNotNull()] 
  11. [System.Management.Automation.Credential()] 
  12. $Credential = [System.Management.Automation.PSCredential]::Empty 
  13. ) 
  14. process { 
  15.  
  16.   if (Test-Connection -ComputerName $computername -Count 1 -ErrorAction SilentlyContinue) { 
  17.    try { 
  18.     $OS = Get-WmiObject -Namespace root\CIMV2 -Class Win32_OperatingSystem ` 
  19.     -ComputerName $computername -Credential $credential -ErrorAction SilentlyContinue 
  20.     if ($OS) { 
  21.      $path = "$($OS.SystemDirectory -replace '\\','\\')\\WindowsPowerShell\\v1.0\\powershell.exe" 
  22.      $OSName = $OS.Name.Split('|')[0] 
  23.      $query = "SELECT Version FROM CIM_DataFile WHERE Name = '$path'" 
  24.      $PSEXE = Get-WmiObject -Query $query -ComputerName $computername -Credential $credential 
  25.      if ($PSEXE.Version) { 
  26.       $buildversion = $PSEXE.Version.Split()[0] 
  27.       $versionPresent = [version]$buildversion 
  28.       $versionRequired = [version]'6.0.6002.18111' 
  29.       if ($versionPresent -ge $versionRequired) { 
  30.        $psversion = "V2 RTM" 
  31.       } elseif ($versionPresent.Major -ge 6) { 
  32.        $psversion = "V2 CTP Prerelease - Update to V2 RTM!" 
  33.       } else { 
  34.        $psversion = "V1" 
  35.       } 
  36.  
  37.       New-Object PSObject -Property @{ 
  38.        ComputerName=$OS.__SERVER; 
  39.        BuildVersion=[version]$buildversion 
  40.        Version=$psversion; 
  41.        Status=$true;Description='OK'; 
  42.        OSName = $OSName 
  43.        
  44.      } 
  45.     } else { 
  46.      New-Object PSObject -Property @{ 
  47.       ComputerName=$computername[0]; 
  48.       BuildVersion=[version]$null; 
  49.       Version='n/a'; 
  50.       Status=$false; 
  51.       Description='Unable to access OS information via WMI.'; 
  52.       OSName = 'n/a' 
  53.      } 
  54.     } 
  55.    } 
  56.   }  
  57.   catch { 
  58.    New-Object PSObject -Property @{ 
  59.     ComputerName=$computername[0]; 
  60.     BuildVersion=[version]$null; 
  61.     Version='n/a'; 
  62.     Status=$false; 
  63.     Description=($_.Exception.Message); 
  64.     OSName='n/a' 
  65.    } 
  66.    continue 
  67.   }  
  68.  
  69. } else { 
  70.   New-Object PSObject -Property @{ 
  71.    ComputerName=$computername[0]; 
  72.    BuildVersion=[version]$null; 
  73.    Version='n/a'; 
  74.    Status=$false; 
  75.    Description='Computer did not respond to ping, skipped.'; 
  76.    OSName='n/a' 
  77.   } 
  78. } 
  79. } 
  80. } 
  81.  
  82. "localhost", "pc77", "localhost", "storage1" |  
  83. Test-PSVersion 
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Checks local or remote PowerShell version and differentiates V1, V2 CTPs and V2 to help you find outdated PowerShell installations.

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