Function for testing files in similar paths but different roots exist in both places

removeOldBackups.ps1

# Script for testing file existence in two places
# PS C:\> . .\removeOldBackups.ps1
# PS C:\> existsInBoth -DestRoot 'C:\Program Files\' -SourceRoot 'C:\Program Files (x86)\' -CommonPath "Common Files"
# True
# PS C:\> existsInBoth -DestRoot 'C:\Program Files\' -SourceRoot 'C:\Program Files (x86)\' -CommonPath "UnmatchedFile"
# False

function existsInBoth{
	param (	[string] $SourceRoot,
			[string] $DestRoot,
 			[string] $CommonPath)
 			$result = $false

 			$sourceTarget = [System.IO.Path]::Combine($SourceRoot, $CommonPath)
 			$destTarget = [System.IO.Path]::Combine($DestRoot, $CommonPath)

			if ((Test-Path -ErrorAction Ignore ($sourceTarget)) -and (Test-Path -ErrorAction Ignore ($destTarget) )) {
				$result = $true
			}
			return $result
}