FileMasker

Batch rename files to numbers before uploading to cloud drives, then restore original names after downloading.

Only renames files in the current folder. Subfolders and file extensions are not affected.

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Android

macOS / Linux should also work but not tested.

Requirements: MT Manager with shell extension pack, or Termux

1. Copy filemasker.sh into the target folder
2. Open with MT Manager shell / Termux and run:

chmod +x filemasker.sh
./filemasker.sh

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Windows

Requirements: Windows 7 or above (PowerShell built-in)

1. Copy filemasker.ps1 into the target folder
2. Right-click filemasker.ps1 → Properties → check Unblock at the bottom → click OK
3. Right-click filemasker.ps1 → Run with PowerShell

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Menu Options

Option	Action
1	Scan and record MD5 of all files
2	Rename all files to numbers (1.mp4, 2.mp4...)
3	Restore original filenames
4	Show current status
0	Exit

Press Enter after each operation to return to the menu.

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Tip

If someone already renamed the files before sharing, just put the _fm_map.txt mapping file in the same folder and run option 3 to restore.

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License

MIT