Rename and moves perfmon logs formatted with a certain pattern

rename-perfmon.ps1

# Normalizes perfmon logs names given a set of directories
# following the pattern COMPUTERNAME_YYYYMMDD-NNNNNN
# by moving log files to the root dir and assigning a unique name

$PALDir = "D:\Temp\PAL"
Get-ChildItem $PALDir -Directory |
	? { $_.Name -match "(?<ComputerName>\w*)_(?<ISODate>\d{4}\d{2}\d{2})-(?<Sequence>\d{6})" } |
	% {
		$file = Get-ChildItem $_.FullName;
		$file.MoveTo($PALDir + "\" + $Matches["ComputerName"] + "_PAL_" + $Matches["ISODate"] + "_" + $Matches["Sequence"]+".blg");
		rd $_.FullName;
		
	}