Systems Repository: A playground for the curious

A playground for systems programming. Dive into OS internals, C, assembly, memory allocators, and more through hands-on projects. Grows at a rate of one project or upgrade-to-existing-project per day, but as always is subject to the irregularities of human existence.

• dynamic-array : Implementing dynamically growing arrays in C. No limit required in declaration unlike normal C arrays.
• stack-growth : Figuring out which direction the stack in memory grows(Up or Down).
• File handling refresher : A straightforward refresher to file handling in C.
• custom printf() : A custom printf() function from scratch using variadic arguments and write().
• hexdump from scratch : hexditch a hexdump implementation in C with basic features. Supports ascii and colors.
• slumber : A small program that wraps around nanosleep to create a seacond based sleep() function called slumber.
• bump-allocator : baby_malloc(), a simulation(?) of how memory management works under the hood. Good project to get started with memory.
• steal : A custom cp function. Handles batch copying and is being maintained to handle multithreading.
• SIMD-addition : learn how to write SIMD assembly(add two 16 byte arrays) and connect it to C to improve performance.
• signal-logger : log signals sent to the terminal, learn about signals in C
• json-parse : JSON parser written in C, designed to help understand how JSON parsing works under the hood using a deterministic finite automaton (DFA) style state machine approach. Learn state machines in C!
• TCP-chat-server : multithreaded TCP chat server written in C using POSIX sockets and pthread.
• ELF-loader : A minimal Executable and linking format (ELF) loader to peek under the hood of how the OS loads programs (is a wee bit heavy project in comparison).
• Tiny-shell : A tiny shell in C. Barebones implementation of a shell. uses fork(), execvp(), handles '<', '>', '|' etc.