Clear temp folders on Computer start with PowerShell

This script will clear the common temp folders on Windows 7 client computers.

$date = Get-Date -Format "dd.mm.yy-HH:mm"
$win_temp_folder = "C:\Windows\Temp"
$outfile = "C:\tmp\clear_tmp.log"
$temp_folders = Get-Item C:\Users\*\AppData\Local\Temp
$os = (Get-WMIObject Win32_OperatingSystem).name

if ($os -like "*Windows 7*")
    {
    # CLEAR APPDATA LOCAL TEMP FOLDER PER USER
    foreach ($temp_folder in $temp_folders)
        {
        $user_temp_files = Get-ChildItem -Path $temp_folder
        $user_temp_files_count = ($user_temp_files | measure).Count
            if ($user_temp_files_count -gt 0)
            {
            echo "#########################################################################" | Out-File $outfile -Append
            echo "$date" | Out-File $outfile -Append
            $user_temp_folder_fullname = $temp_folder.FullName
            echo "Clearing $user_temp_folder_fullname" | Out-File $outfile -Append
            Remove-Item $user_temp_folder_fullname\* -Recurse -Force   
            }
        }
        # CLEAR WINDOWS TEMP FOLDER
        echo "Clearing $win_temp_folder" | Out-File $outfile -Append
        Remove-Item $win_temp_folder\* -Recurse -Force
    }

In line 4 we make sure to grab the \AppData\Local\Temp folder for every user on the machine and with line 7 we apply this to Windows 7 client PCs only. The script will write it’s activity in the $outfile.

I recommend applying this as a GPO start up script to make sure that none of the files in those folders are in use while the script runs: Computer-Configuration\Policies\Windows-Settings\Scripts\

PowerShell Version: 4
Modules: none