Public/Optimize-SystemFiles.ps1
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<#
.SYNOPSIS Removes common system-wide temporary files and folders older than $Days old. OPTIONAL: Clears Windows Recycle Bin Folders: "$env:SystemRoot\Temp" "$env:SystemRoot\Logs\CBS" "$env:SystemRoot\Downloaded Program Files" "$env:ProgramData\Microsoft\Windows\WER" .NOTES Author: Tom de Leeuw Website: https://ucsystems.nl / https://tech-tom.com #> function Optimize-SystemFiles { [CmdletBinding()] param( # Only remove files and folders older than $Days old. [Parameter(Mandatory = $true, Position = 0)] [int] $Days, # Removes common system-wide temporary files and folders older than $Days old. [switch] $TempFiles, # Clears Windows Recycle Bin [switch] $RecycleBin ) begin { # Verify if running as Administrator Assert-RunAsAdministrator # Start timer $StopWatch = [System.Diagnostics.Stopwatch]::StartNew() # Get disk space for comparison afterwards $Before = Get-DiskSpace # Folders to clean up $Folders = @( "$env:SystemRoot\Temp", "$env:SystemRoot\Logs\CBS", "$env:SystemRoot\Downloaded Program Files", "$env:ProgramData\Microsoft\Windows\WER" ) } process { # Common temp files if ($TempFiles -eq $true) { Write-Verbose "Cleaning SYSTEM folders/files older than $Days days old..." $FilesToClean = ForEach ($Folder in $Folders) { if (Test-Path -Path $Folder) { try { Get-ChildItem -Path $Folder -Recurse -Force -ErrorAction 'SilentlyContinue' | Where-Object { ($_.CreationTime -and $_.LastWriteTime -lt $(Get-Date).AddDays(-$Days)) } } catch { Write-Error $_ } } } $FilesToClean | ForEach-Object { if ($_.PSIsContainer) { Write-Information "Cleaning directory: $($_.FullName)" } Remove-Item $_.FullName -Recurse -Force -ErrorAction 'SilentlyContinue' } Write-Information "Finished removing System temp files." } # Empty Recycle Bin if ($RecycleBin -eq $true) { try { Write-Verbose 'Clearing Recycle Bin' Clear-RecycleBin -Force } catch { Write-Error $_ } } } # end Process end { New-CleanupReport -Name "SystemFiles" } } |