Linux Developer Guide

Pointer arithmetic, pointer-to-pointer, function pointers, memory layout, and stack vs heap.

Struct layout, padding/alignment, bit-fields, unions, and typedef patterns for embedded protocols.

fopen/fread/fwrite, buffered vs unbuffered I/O, file positioning, and binary file handling.

malloc/calloc/realloc/free, memory leaks, Valgrind, and custom allocator patterns.

Rules, variables, automatic variables, pattern rules, phony targets, and multi-directory builds.

Warning flags, optimization levels, sanitizers, cross-compile flags, and reading assembly output.

Breakpoints, watchpoints, stack frames, core dumps, remote debugging, and GDB scripting.

Classes, inheritance, virtual dispatch, RAII, Rule of Five, and exception safety guarantees.

Function/class templates, template specialisation, STL containers, iterators, and algorithms.

unique_ptr, shared_ptr, weak_ptr, custom deleters, and when to use each in embedded context.

lvalue/rvalue, move constructor/assignment, std::move, perfect forwarding, and copy elision.

Targets, properties, find_package, CPack, cross-compilation toolchain files, and modern CMake patterns.

Signals & slots, QObject, QML basics, Qt for embedded (eglfs), and serial/network I/O.

Structured bindings, std::optional/variant, concepts, ranges, coroutines, and modules.

open/read/write/close, file descriptors, O_flags, ioctl, mmap, select/poll/epoll.

fork/exec/wait, process groups, sessions, daemon creation, and zombie reaping.

sigaction, signal masks, real-time signals, signal-safe functions, and self-pipe trick.

TCP/UDP sockets, server/client patterns, non-blocking I/O, and UNIX domain sockets.

pthread_create/join/detach, thread attributes, CPU affinity, and thread-local storage.

pthread_mutex, condition variables, semaphores, rwlocks, and avoiding deadlocks.

Anonymous & named pipes (FIFOs), POSIX shared memory, message queues, and mmap IPC.