Systems & Low-Level

C and C++ fundamentals, engines, physics, native libraries, architecture and performance.

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  Deep dive 42 Common Core · Part 3 Systems & Low-Level

  42 Common Core — get_next_line: Reading a File One Line at a Time

  Buffered reads, static state between calls and a linked list of chunks, plus the bonus: several file descriptors at once

  Oct 2026 · C· Linux
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  Deep dive 42 Common Core · Part 2 Systems & Low-Level

  42 Common Core — ft_printf: Variadic Functions and Format Parsing

  Recreating printf with va_list, a small format parser and a single layout function for flags, width and precision

  Oct 2026 · C· Linux
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  Deep dive 42 Common Core · Part 1 Systems & Low-Level

  42 Common Core — Libft: Rebuilding the C Standard Library

  Re-implementing libc string, memory and list functions from scratch, and the edge cases that matter: overlapping copies, size-bounded strings and allocation failures

  Oct 2026 · C· Linux
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  Notes C & Shell Fundamentals · Part 10 Systems & Low-Level

  C — Debugging with Valgrind

  How to use Valgrind to detect memory leaks, invalid reads and writes, and uninitialised values in C programs

  Jul 2026 · C· Linux
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  Notes C & Shell Fundamentals · Part 9 Systems & Low-Level

  C — Debugging with GDB

  How to compile for debugging and use GDB to step through C code, inspect variables, and set breakpoints

  Jul 2026 · C· Linux
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  Notes C & Shell Fundamentals · Part 8 Systems & Low-Level

  C — Function Pointers

  How to store, pass, and call functions through pointers in C, including void * generic callbacks

  Jul 2026 · C
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  Notes C & Shell Fundamentals · Part 7 Systems & Low-Level

  C — Linked Lists

  How to build and manipulate singly linked lists in C — nodes, traversal, insertion, deletion, and memory management

  Jul 2026 · C
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  Notes C & Shell Fundamentals · Part 6 Systems & Low-Level

  C — Structs

  How to group data with structs and typedef in C, and how they underpin linked lists and trees

  Jul 2026 · C
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  Notes C & Shell Fundamentals · Part 5 Systems & Low-Level

  C — Makefile

  How to write a Makefile to automate C compilation, with all, clean, fclean, and re rules

  Jul 2026 · C· Linux
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  Notes C & Shell Fundamentals · Part 4 Systems & Low-Level

  C — Header Files

  How to write and use header files in C — declarations, include guards, and project organisation

  Jul 2026 · C
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  Notes C & Shell Fundamentals · Part 3 Systems & Low-Level

  C — Recursion

  Understanding recursive functions, the call stack, and stack overflow in C

  Jul 2026 · C
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  Notes C & Shell Fundamentals · Part 2 Systems & Low-Level

  C — Basics

  Core C programming concepts from variables and pointers to memory allocation

  Jul 2026 · C
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  Notes C & Shell Fundamentals · Part 1 Systems & Low-Level

  Shell Tips — Commands & Bash Scripting

  A practical guide to essential Shell commands and writing your first #!/bin/bash script

  Jul 2026 · Linux· Shell