Erase.js

The plan is to wipe all the Termux Linux files on my smartphone (more/less) securely.. by traversing a directory and overwriting all files with exactly the same amount of \0 or random bytes.

Without jailbreak one can't dd the whole disk drive(s). So I needed to do this directly on file level..

Flash/SSD drives

Warning

On Flash drives it's not perfectly secure.. but I'll research a bit more for this issue.

I think the solution for their insecurity is to fill with random/null until no space is free, and then delete everything again. Right?!

But this is still a TODO item. Should be ready very soon..

News

• [2025-05-24] Some design (interface) improvements and fixes.. maybe more.
• [2025-05-14] Completely rewritten from scratch (now also with new screenshot), v2;
• [2025-05-01] ATM I'm implementing everything again, just from scratch (w/ all TODO items this time);
• [2025-04-27] Just published an example screenshot here.
• [2025-04-25] Now also w/ --chmod (plus config.js change);
• [2025-04-25] Made this app more secure by calling fsync after each iteration.
• [2025-04-22] Beautyfied and fixed last errors w/ the ANSI sequences and strings.. looks great.
• [2025-04-22] Removed the 'simulation' debug switch.. the whole thing should work well now.
• [2025-04-22] Now also supporting pure files instead of only an entry directory.
• [2025-04-14] Nearly finished.. the --iterations is now also ready.
• [2025-04-13] It should work well now.. but there's still a tiny TODO.txt
• [2025-04-09] Created this repository (I'm already working on this tool, right now);

Download

Here's the newest (second) version available.

Much better code, beautified everything up, and most TODO items are integrated now. The older version is also there, beneath the newest version.

• ./src/js/ (updated 2025-05-24);
• ./src/sh/ (published 2025-05-14);

Parameters and Configuration

• param.json (updated 2025-05-14);
• config.json (updated 2025-05-14);

Architecture/Structure

This project is also based on some base implementation which is currently not available for public; it won't run as-is!

The reason I made this one public is to provide you some example code you could use. Or feel free to create a full fledged version out of this one.

Screenshot

This is an example screenshot for the newest version (v2).

And this is the older version (v1).

TODO

There's one little TODO.txt for this (sub-)project.

Contact

Copyright and License

The Copyright is (c) Sebastian Kucharczyk, and it's licensed under the MIT (also known as 'X' or 'X11' license).