Merkdir – create Merkle trees from your directories
In plain words
Merkdir is a command-line tool that generates Merkle trees from directory structures. It creates cryptographic hash trees representing file hierarchies, useful for verifying data integrity and detecting changes across directories. The tool is designed for developers and system administrators who need to track and validate directory contents efficiently. Available as open source on GitHub, Merkdir transforms file systems into structured hash-based representations for security and verification purposes.
written from the facts on this page · September 2026
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Hi HN, I built Eigendrum, a web tool that solves the 2D wave equation for arbitrary shapes so you can hear what they sound like as drums. How it works: * Solves -∇²u = λu using finite element analysis (Kφ = λMφ) on a triangle mesh. * Validated to <0.1% error against closed-form solutions for circles (Bessel zeros) and rectangles. * Sound model factors in strike location, Rayleigh damping, and mallet width. * Includes Kac drums I & II to demonstrate identical sound spectra from different geometries. * No frameworks, build steps, or dependencies. Repo and tests:…
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Launched alongside, January 2024
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Life & fun · 2024 · sitinshade.com
