Ta bort filer äldre än x dagar

get-childitem -Path C:\inetpub\logs\LogFiles -recurse |
where-object {$_.lastwritetime -lt (get-date).addDays(-90)} |
Foreach-Object { del $_.FullName }

Schemalägg med
powershell.exe c:\scripts\del_old_logs.ps1 -noprofile -Noninteractive