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Using BleachBit # Once installed, BleachBit works the same on Windows as it does on Linux, so we've combined the instructions for both here. These screenshots are all from Windows 11, but we include directions for Linux in the rare cases where they differ. How to Securely Delete a Folder or File # Click the Bleachbit icon (or the three-line hamburger menu on Linux) and select "Shred Files" or "Shred Folders," depending on which task you want to complete.