$cutoff = (Get-Date) - (New-TimeSpan -Days 30) $before = (Get-ChildItem $env:temp | Measure-Object Length -Sum).Sum Get-ChildItem $env:temp |                             Where-Object { $_.Length -ne $null } |              Where-Object { $_.LastWriteTime -lt $cutoff } |  Remove-Item -Force -ErrorAction SilentlyContinue -Recurse -WhatIf $after = (Get-ChildItem $env:temp | Measure-Object Length -Sum).Sum $freed = $before - $after 'Cleanup freed {0:0.0} MB.' -f ($freed/1MB)