rrampage

Fun read! I built a minimal Linux shell [0] in c and Zig last year which does not depend on libc. It was a great way to learn about execve, the new-ish clone3 syscall and how Linux starts a process. Parsing strings is the least fun part of the building the shell.

[0] https://gist.github.com/rrampage/5046b60ca2d040bcffb49ee38e8...

rrampage

7 ay öncediscuss

Recurse center is awesome! The community is curious, kind and supportive. I did 2 batches there and each one expanded my horizons as a programmer.

rrampage

geçen yıldiscuss

I've been building small programs in Zig, C and ARM64 assembly without relying on libc and only using Linux syscalls directly.

Some examples:

- A minimal C shell with built-ins like cd, pwd, type: https://gist.github.com/rrampage/5046b60ca2d040bcffb49ee38e8...

- Terminal Snake game which fits in a QR code using Linux syscalls for drawing: https://gist.github.com/rrampage/2a781662645dc2fcba45784eb58...

- HTTP server with sendfile support in ARM64 assembly: https://gist.github.com/rrampage/d31e75647a77badb3586ebae1e4...

I learned to handcraft a static ELF binary using just GNU assembler (no linker): https://gist.github.com/rrampage/74586d0a0a451f43b546b169d46... . Trying to see if I can craft a small assembler in ARM64

rrampage

geçen yıldiscuss

The paper title is "Sandboxing: Foolproof Boundaries vs. Unbounded Foolishness"

rrampage

2 yıl öncediscuss

Yurichev's SAT/SMT by Example [0] is a great (free!) resource for learning how to model problems to SAT/SMT

[0] - https://smt.st/

rrampage

2 yıl öncediscuss

Storage cost is much higher. Express One Zone is $0.16 per GB while standard S3 is $0.023 per GB ( https://aws.amazon.com/s3/pricing/?nc=sn&loc=4 )

rrampage

2 yıl öncediscuss

Repos:

Snapshot - Capture a snapshot (or subset) of your Postgres database whilst transforming the data ( Link: https://github.com/snaplet/snapshot )

Copycat - Generate deterministic fake values (e.g to anonymize sensitive data) ( Link: https://github.com/snaplet/copycat )

Seed - Automatically seed your database with production-like dummy data based on your schema for local development and testing ( Link: https://github.com/snaplet/seed )

rrampage

2 yıl öncediscuss

  Location: Mumbai, India
  Remote: Preferred
  Willing to relocate: Yes, within India
  Technologies: Java, Golang, Python, WebAssembly, Linux, SQL, Kubernetes, AWS, GCP, Ruby on Rails
  Résumé/CV: https://www.linkedin.com/in/raunak1/
  Email: raunak1001 (at) outlook (dot) com

- Principal Software Engineer with 11 years experience.

- Have predominantly worked in scaling out backend services with a focus on building search, analytics and recommendation systems, refactoring monoliths, optimizing cloud costs.

- Have done minimal downtime migrations of infrastructure for AWS and GCP.

As a side project, I have been building a WebAssembly interpreter from scratch at https://github.com/rrampage/wart . It can run Doom and boot Linux!

rrampage

2 yıl öncediscuss

Repo: https://github.com/rive-app/rive-renderer

rrampage

2 yıl öncediscuss

Super nice project! I also spent the last month writing a WASM interpreter ( https://github.com/rrampage/wart ) using Java 21. I started it as an excuse to try out the pattern matching in switch / sealed classes in Java. It kind of snowballed in scope and can now run Doom and Waforth ( https://github.com/remko/waforth )! Have not yet tried compiling it to WASM and running it as a meta-circular interpreter.

rrampage

2 yıl öncediscuss

  Location: Mumbai, India
  Remote: Preferred
  Willing to relocate: Yes, within India
  Technologies: Java, Golang, Python, WebAssembly, Linux, SQL, Kubernetes, AWS, GCP, Ruby on Rails
  Résumé/CV: https://www.linkedin.com/in/raunak1/
  Email: raunak1001 (at) outlook (dot) com

- Principal Software Engineer with 11 years experience.

- Have predominantly worked in scaling out backend services with a focus on building search, analytics and recommendation systems, refactoring monoliths, optimizing cloud costs.

- Have done minimal downtime migrations of infrastructure for AWS and GCP.

As a side project, I have been building a WebAssembly interpreter from scratch at https://github.com/rrampage/wart . It can run Doom!

Submissions

Poison, redzones and shadows: inside KASAN

How to Train Your Goblin

Dealing with cancel safety in async Rust

Academic Research Papers in Open Source Code

PoC for Critical Lua Engine Vulnerabilities in Redis 7.4.5

Nothing fails like a history of success

When SSRF Is Enough: Full Docker Escape on Windows Docker Desktop(CVE-2025-9074)

AUR Chaos Malware: An Analysis

Perplexity is using stealth, undeclared crawlers to evade no-crawl directives

Firefox-patch-bin, librewolf-fix-bin AUR packages contain malware

How I Became the First Linux User in India

Understanding Quake's Fast Inverse Square Root

Pgconf.dev 2025 Wraps Up with Great Success in Montreal

A disk is a bunch of bits (2023)

Creative usernames and Spotify account hijacking

An Implementation of J – Roger Hui (1992) [pdf]

A Quick Journey into the Linux Kernel

How fast can you open 1000 files?

The Trouble with Leader Elections in distributed systems

Defining LLM Red Teaming

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