function Test-PSVersion {
 [CmdletBinding()]
 param(
 [parameter(Position=0,ValueFromPipeline=$true)]
 [ValidateNotNullOrEmpty()]
 [String[]]
 $ComputerName = @('.'),

 [Parameter()]
 [ValidateNotNull()]
 [System.Management.Automation.Credential()]
 $Credential = [System.Management.Automation.PSCredential]::Empty
 )
 process {

  if (Test-Connection -ComputerName $computername -Count 1 -ErrorAction SilentlyContinue) {
   try {
    $OS = Get-WmiObject -Namespace root\CIMV2 -Class Win32_OperatingSystem `
    -ComputerName $computername -Credential $credential -ErrorAction SilentlyContinue
    if ($OS) {
     $path = "$($OS.SystemDirectory -replace '\\','\\')\\WindowsPowerShell\\v1.0\\powershell.exe"
     $OSName = $OS.Name.Split('|')[0]
     $query = "SELECT Version FROM CIM_DataFile WHERE Name = '$path'"
     $PSEXE = Get-WmiObject -Query $query -ComputerName $computername -Credential $credential
     if ($PSEXE.Version) {
      $buildversion = $PSEXE.Version.Split()[0]
      $versionPresent = [version]$buildversion
      $versionRequired = [version]'6.0.6002.18111'
      if ($versionPresent -ge $versionRequired) {
       $psversion = "V2 RTM"
      } elseif ($versionPresent.Major -ge 6) {
       $psversion = "V2 CTP Prerelease - Update to V2 RTM!"
      } else {
       $psversion = "V1"
      }

      New-Object PSObject -Property @{
       ComputerName=$OS.__SERVER;
       BuildVersion=[version]$buildversion
       Version=$psversion;
       Status=$true;Description='OK';
       OSName = $OSName
      
     }
    } else {
     New-Object PSObject -Property @{
      ComputerName=$computername[0];
      BuildVersion=[version]$null;
      Version='n/a';
      Status=$false;
      Description='Unable to access OS information via WMI.';
      OSName = 'n/a'
     }
    }
   }
  } 
  catch {
   New-Object PSObject -Property @{
    ComputerName=$computername[0];
    BuildVersion=[version]$null;
    Version='n/a';
    Status=$false;
    Description=($_.Exception.Message);
    OSName='n/a'
   }
   continue
  } 

 } else {
  New-Object PSObject -Property @{
   ComputerName=$computername[0];
   BuildVersion=[version]$null;
   Version='n/a';
   Status=$false;
   Description='Computer did not respond to ping, skipped.';
   OSName='n/a'
  }
 }
}
}

"localhost", "pc77", "localhost", "storage1" | 
Test-PSVersion