delete_files_older_than

$Daysold = 10
$Folder = "c:\windows\temp"

#Borramos los ficheros que haya en la Variable Folder, que sean mas viejos que Daysold
Get-ChildItem $Folder -Recurse -Force -ea 0 |
? {!$_.PsIsContainer -and $_.LastWriteTime -lt (Get-Date).AddDays(-$Daysold)} |
ForEach-Object {
   $_ | del -Force
   $_.FullName | Out-File C:\tmp\deletedlog.txt -Append
}

#Eliniar directorios vacios
Get-ChildItem $Folder -Recurse -Force -ea 0 |
? {$_.PsIsContainer -eq $True} |
? {$_.getfiles().count -eq 0} |
ForEach-Object {
    $_ | del -Force
    $_.FullName | Out-File C:\tmp\deletedlog.txt -Append
}
#Los nombres de los ficheros eliminados los guardamos en C:\tmp\deletedlog.txt por si queremos tracearlo.