Batch Script Cleanup Exclusions Guide

Overview

This document explains how to safely exclude specific folders (such as Backgrounds) from cleanup routines in Windows batch scripts. It is designed as a reusable reference for administrators.

Problem

Standard cleanup functions like:

Call :RemoveSubfoldersAndFiles <path>

remove everything inside a directory, making it impossible to exclude specific subfolders directly.

Solution Approach

Instead of calling the cleanup function on the root folder, loop through subfolders and exclude specific ones.

Core Pattern

for /d %%i in ("<path>\*") do if /i not "%%~nxi"=="<EXCLUDE_FOLDER>" call :RemoveSubfoldersAndFiles "%%i"

Explanation

• for /d %%i in (...) → loops through directories only\
• %%~nxi → extracts folder name\
• if /i not → case-insensitive exclusion\
• call :RemoveSubfoldersAndFiles → executes existing cleanup logic

Example (Microsoft Teams Cache)

for /d %%i in ("%UserProfilePath%\AppData\local\Packages\MSTeams_8wekyb3d8bbwe\LocalCache\Microsoft\MSTeams\*") do if /i not "%%~nxi"=="Backgrounds" call :RemoveSubfoldersAndFiles "%%i"

Result

  Folder        Action
  ------------- ---------
  Backgrounds   Kept
  Cache         Deleted
  GPUCache      Deleted

Reusable Template

set TARGET=<path> set EXCLUDE=<folder>

for /d %%i in ("%TARGET%\*") do if /i not "%%~nxi"=="%EXCLUDE%" call :RemoveSubfoldersAndFiles "%%i"

Multiple Exclusions

for /d %%i in ("%TARGET%\*") do (
    if /i not "%%~nxi"=="Backgrounds" if /i not "%%~nxi"=="ImportantFolder" call :RemoveSubfoldersAndFiles "%%i"
)

Best Practices

1. Never delete root blindly

Always avoid running cleanup directly on folders containing user data.

2. Use exclusions for user-generated content

Examples: - Teams backgrounds - Browser profiles - Custom configs

3. Test with echo (dry-run)

for /d %%i in ("%TARGET%\*") do if /i not "%%~nxi"=="Backgrounds" echo Would clean %%i

4. Keep scripts maintainable

Prefer readable loops over overly compact one-liners in production environments.

Integration Strategy

You can apply this pattern in: - Temp cleanup scripts - Log rotation scripts - Cache cleanup routines - Enterprise login scripts (GPO)

Summary

• Direct cleanup removes everything → unsafe\
• Loop-based cleanup → flexible and safe\
• Exclusion logic → essential for modern environments

This pattern ensures safe automation while preserving critical user data.