PurgeOldPerfmons - individual file version

PurgeOldPerfmonsFiles.ps1

$perfLogsFolder = "C:\Perflogs"
$numberOfDaysToKeep = 3

$dateThreshold = [DateTime]::Now.AddDays(0 - $numberOfDaysToKeep)

# Check to see if we need to clean up old nmcap files
$files = new-object 'System.Collections.Generic.List[string]'
$files.AddRange([System.IO.Directory]::GetFiles($perfLogsFolder))
$filesToDelete = new-object 'System.Collections.Generic.List[string]'

foreach ($file in $files)
{
    $fileTime = [System.IO.File]::GetCreationTime($file)
    if ($fileTime -lt $dateThreshold)
    {
        $filesToDelete.Add($file)
    }
}
    
foreach ($file in $filesToDelete)
{
    [System.IO.File]::Delete($file)
}