# linw7/skill-tree

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3,697 stars · 1,070 forks · C

## Links

- GitHub: https://github.com/linw7/Skill-Tree
- awesome-repositories: https://awesome-repositories.com/repository/linw7-skill-tree.md

## Description

Skill-Tree is an educational framework designed to map theoretical technical concepts to practical implementation pipelines and structured interview preparation. It organizes technical knowledge into a tree-based index to enable structured navigation and uses a theory-to-implementation pipeline to verify conceptual understanding through concrete software tasks.

The project provides curated study paths and cross-referenced indexing that links common interview questions and simulated exam sets to specific technical modules. It employs module-based subject isolation to separate diverse backend domains, such as networking and operating systems, into distinct units.

The framework covers a broad range of system-level capabilities, including Linux system programming, high-concurrency IO, and network protocol analysis. It addresses core computer science domains such as memory management, object-oriented programming, concurrency and multithreading, and operating system fundamentals. Additional coverage includes inter-process communication, system internals, and network auditing tools.

The project utilizes Makefile build automation to coordinate the compilation and linking of its multi-file software components.

## Tags

### Education & Learning Resources

- [Curated Learning Paths](https://awesome-repositories.com/f/education-learning-resources/educational-resources/courses-training-certifications/technical-learning-roadmaps/curated-learning-paths.md) — Provides curated collections of educational materials organized into sequential dependency graphs to guide learners through technical topics.
- [Theory-to-Implementation Workflows](https://awesome-repositories.com/f/education-learning-resources/deep-learning-education/theory-to-implementation-workflows.md) — Connects abstract technical specifications to concrete software implementation tasks to verify conceptual understanding.
- [C++ Fundamentals](https://awesome-repositories.com/f/education-learning-resources/educational-resources/languages-and-programming-concepts/software-engineering-languages/language-fundamentals/c-fundamentals.md) — Offers a structured study path covering C++ variable scoping, memory alignment, and system-level pointer operations. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E9%94%99%E9%A2%98%E7%B2%BE%E8%A7%A3.md))
- [Operating System Fundamentals](https://awesome-repositories.com/f/education-learning-resources/fundamental-algorithm-study/core-cs-fundamentals-study/operating-system-fundamentals.md) — Provides comprehensive study and analysis of process lifecycles, CPU scheduling, and kernel mode transitions. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E9%94%99%E9%A2%98%E7%B2%BE%E8%A7%A3.md))
- [Interview Questions](https://awesome-repositories.com/f/education-learning-resources/interview-questions.md) — Maps common technical interview questions and simulated exam sets to specific learning modules.
- [Technical Interview Preparation](https://awesome-repositories.com/f/education-learning-resources/technical-interview-preparation.md) — Provides curated problem sets, theory, and exam materials for backend technical interview preparation.
- [Data Structure Implementations](https://awesome-repositories.com/f/education-learning-resources/data-structure-implementations.md) — Provides educational implementations of standard containers like vector and map based on underlying data structures. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E7%BC%96%E7%A8%8B%E8%AF%AD%E8%A8%80C++.md))
- [Pattern Implementations](https://awesome-repositories.com/f/education-learning-resources/educational-resources/languages-and-programming-concepts/programming-language-mastery-guides/object-oriented-programming-concepts/pattern-implementations.md) — Implements encapsulation, inheritance, and polymorphism through concrete C++ class templates and virtual functions. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E7%BC%96%E7%A8%8B%E8%AF%AD%E8%A8%80C++.md))

### Networking & Communication

- [Shared Memory IPC](https://awesome-repositories.com/f/networking-communication/communication-protocols-architectures/inter-process-communication/shared-memory-ipc.md) — Covers the implementation of shared memory regions to achieve high-speed, zero-copy data exchange between processes. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E6%93%8D%E4%BD%9C%E7%B3%BB%E7%BB%9F.md))
- [HTTP Protocols](https://awesome-repositories.com/f/networking-communication/http-protocols.md) — Provides educational analysis of HTTP request and response structures, including methods, headers, and status codes. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E8%AE%A1%E7%AE%97%E6%9C%BA%E7%BD%91%E7%BB%9C.md))
- [Network I/O Multiplexing](https://awesome-repositories.com/f/networking-communication/network-i-o-multiplexing.md) — Implements practical examples of monitoring multiple network sockets concurrently using select, poll, and epoll. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E6%93%8D%E4%BD%9C%E7%B3%BB%E7%BB%9F.md))
- [TCP Mechanism Analysis](https://awesome-repositories.com/f/networking-communication/reliable-transmission-mechanisms/tcp-mechanism-analysis.md) — Implements a detailed analysis of the TCP three-way handshake, teardown processes, and header structures. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E8%AE%A1%E7%AE%97%E6%9C%BA%E7%BD%91%E7%BB%9C.md))
- [Non-Blocking Socket I/O](https://awesome-repositories.com/f/networking-communication/socket-networking/non-blocking-socket-i-o.md) — Teaches the configuration of non-blocking file descriptors to prevent process suspension during network I/O. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E6%93%8D%E4%BD%9C%E7%B3%BB%E7%BB%9F.md))
- [IO Multiplexing](https://awesome-repositories.com/f/networking-communication/connection-multiplexing/io-multiplexing.md) — Implements scalable network applications using non-blocking IO and multiplexing techniques like epoll.
- [Network Protocol Analysis](https://awesome-repositories.com/f/networking-communication/network-protocol-analysis.md) — Analyzes the OSI model and TCP/IP mechanisms to understand how data is transmitted and managed.
- [Network Traffic Captures](https://awesome-repositories.com/f/networking-communication/network-traffic-captures.md) — Provides a framework for intercepting and analyzing network data packets to debug TCP handshakes and transmissions. ([source](https://github.com/linw7/Skill-Tree/blob/master/Linux%E5%B7%A5%E5%85%B7.md))
- [Congestion Controllers](https://awesome-repositories.com/f/networking-communication/packet-engines/congestion-controllers.md) — Provides theoretical and practical analysis of TCP congestion algorithms, including slow start and avoidance. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E8%AE%A1%E7%AE%97%E6%9C%BA%E7%BD%91%E7%BB%9C.md))

### Operating Systems & Systems Programming

- [Lifecycle Event Tracking](https://awesome-repositories.com/f/operating-systems-systems-programming/constructor-and-destructor-execution/lifecycle-event-tracking.md) — Implements a tracking system to verify the execution order of constructors, destructors, and initialization lists. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E9%94%99%E9%A2%98%E7%B2%BE%E8%A7%A3.md))
- [Executable Program Loading](https://awesome-repositories.com/f/operating-systems-systems-programming/executable-program-loading.md) — Traces the process of loading executables into memory through symbol resolution and virtual memory mapping. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E7%BC%96%E7%A8%8B%E8%AF%AD%E8%A8%80C++.md))
- [Dynamic Memory Allocation](https://awesome-repositories.com/f/operating-systems-systems-programming/kernel-core-internals/process-and-memory-management/memory-management/allocation-strategies/dynamic-memory-allocation.md) — Teaches dynamic memory allocation and deallocation strategies, including techniques to detect leaks and dangling pointers. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E9%94%99%E9%A2%98%E7%B2%BE%E8%A7%A3.md))
- [Pipe-Based Communication](https://awesome-repositories.com/f/operating-systems-systems-programming/kernel-core-internals/system-programming-primitives/inter-process-communication/pipe-based-communication.md) — Implements a learning module on unidirectional data channels and Unix-style pipes for inter-process communication. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E6%93%8D%E4%BD%9C%E7%B3%BB%E7%BB%9F.md))
- [Linux Systems Programming](https://awesome-repositories.com/f/operating-systems-systems-programming/linux-systems-programming.md) — Provides a framework for developing software that interacts with the Linux kernel through system calls and process management.
- [Process Synchronization Locks](https://awesome-repositories.com/f/operating-systems-systems-programming/process-synchronization-locks.md) — Provides practical exercises and theory on using mutexes and semaphores to synchronize shared resource access. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E6%93%8D%E4%BD%9C%E7%B3%BB%E7%BB%9F.md))
- [Binary Dependency Analysis](https://awesome-repositories.com/f/operating-systems-systems-programming/binary-dependency-analysis.md) — Identifies dynamic libraries required by an executable and maps them to virtual address spaces. ([source](https://github.com/linw7/Skill-Tree/blob/master/Linux%E5%B7%A5%E5%85%B7.md))
- [Concurrency Control Primitives](https://awesome-repositories.com/f/operating-systems-systems-programming/concurrency-control-primitives.md) — Implements synchronization primitives and locks to manage shared variables in multi-threaded environments. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E9%94%99%E9%A2%98%E7%B2%BE%E8%A7%A3.md))
- [Zombie Process Reclamation](https://awesome-repositories.com/f/operating-systems-systems-programming/kernel-core-internals/process-and-memory-management/memory-management/process-lifecycle-orchestrators/child-process-management-helpers/zombie-process-reclamation.md) — Implements mechanisms for monitoring child exit statuses and reclaiming resources to prevent zombie processes. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E6%93%8D%E4%BD%9C%E7%B3%BB%E7%BB%9F.md))
- [C++ Memory Management](https://awesome-repositories.com/f/operating-systems-systems-programming/manual-memory-management/c-memory-management.md) — Teaches dynamic memory handling, object models, and pointer operations to prevent leaks and crashes in C++.
- [Process Hierarchy Visualizations](https://awesome-repositories.com/f/operating-systems-systems-programming/process-hierarchy-visualizations.md) — Provides capabilities for visualizing parent-child process relationships and identifying zombie processes. ([source](https://github.com/linw7/Skill-Tree/blob/master/Linux%E5%B7%A5%E5%85%B7.md))
- [Process Lifecycle Management](https://awesome-repositories.com/f/operating-systems-systems-programming/process-lifecycle-management.md) — Provides capabilities for creating child processes and managing their execution lifecycles and signals. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E6%93%8D%E4%BD%9C%E7%B3%BB%E7%BB%9F.md))
- [Copying Strategies](https://awesome-repositories.com/f/operating-systems-systems-programming/raw-memory-block-copies/overlapping-memory-copies/copying-strategies.md) — Implements exercises on handling overlapping memory regions and differentiating between shallow and deep copying. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E9%94%99%E9%A2%98%E7%B2%BE%E8%A7%A3.md))
- [Execution Attribute Configurations](https://awesome-repositories.com/f/operating-systems-systems-programming/thread-scheduling-policies/execution-attribute-configurations.md) — Provides capabilities for setting scheduling policies, scope, and stack sizes for individual thread execution. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E6%93%8D%E4%BD%9C%E7%B3%BB%E7%BB%9F.md))

### Programming Languages & Runtimes

- [C++ Object Model Analysis](https://awesome-repositories.com/f/programming-languages-runtimes/c-object-model-analysis.md) — Provides analysis of virtual function tables and memory padding to determine the physical layout of C++ classes. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E9%94%99%E9%A2%98%E7%B2%BE%E8%A7%A3.md))
- [C++ Object Orientation Analysis](https://awesome-repositories.com/f/programming-languages-runtimes/object-oriented-programming/c-object-orientation-analysis.md) — Provides theoretical and practical analysis of C++ virtual functions and inheritance access levels. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E9%94%99%E9%A2%98%E7%B2%BE%E8%A7%A3.md))
- [STL Container Abstractions](https://awesome-repositories.com/f/programming-languages-runtimes/stl-container-abstractions.md) — Utilizes C++ Standard Template Library containers and iterators for efficient data manipulation. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E9%94%99%E9%A2%98%E7%B2%BE%E8%A7%A3.md))
- [Thread Lifecycle Management](https://awesome-repositories.com/f/programming-languages-runtimes/thread-lifecycle-management.md) — Implements mechanisms for creating, joining, and terminating threads to execute multiple logical flows. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E6%93%8D%E4%BD%9C%E7%B3%BB%E7%BB%9F.md))

### Software Engineering & Architecture

- [Technical Knowledge Maps](https://awesome-repositories.com/f/software-engineering-architecture/technical-knowledge-maps.md) — Organizes technical concepts into a tree-based index to enable structured navigation and fast retrieval of information.
- [Multi-Threaded Programming Exercises](https://awesome-repositories.com/f/software-engineering-architecture/concurrent-programming-patterns/multi-threaded-programming-exercises.md) — Provides exercises for implementing multi-threading and inter-process communication using locks and shared memory.
- [Educational Subject Isolation](https://awesome-repositories.com/f/software-engineering-architecture/dependency-free-architectures/target-based-module-isolation/educational-subject-isolation.md) — Separates diverse backend domains like networking and operating systems into distinct units to manage cognitive load.

### Development Tools & Productivity

- [Compiled Language Debugging](https://awesome-repositories.com/f/development-tools-productivity/compiled-language-debugging.md) — Provides tools for transforming source code into executables and analyzing behavior via breakpoints and coredumps. ([source](https://github.com/linw7/Skill-Tree/blob/master/Linux%E5%B7%A5%E5%85%B7.md))

### Security & Cryptography

- [Server-Side Session Management](https://awesome-repositories.com/f/security-cryptography/user-identity-management/server-side-session-management.md) — Covers the coordination of stateless communication using cookies and server-side session storage. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E8%AE%A1%E7%AE%97%E6%9C%BA%E7%BD%91%E7%BB%9C.md))

### System Administration & Monitoring

- [Linux System Administration](https://awesome-repositories.com/f/system-administration-monitoring/administrative-operations/linux-system-administration.md) — Covers Linux environment configuration including shell variables, symbolic links, and file IO system calls. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E9%94%99%E9%A2%98%E7%B2%BE%E8%A7%A3.md))
- [System Call Tracing](https://awesome-repositories.com/f/system-administration-monitoring/diagnostic-tools/diagnostics/execution-tracers/kernel-tracing-frameworks/system-call-tracing.md) — Includes a module on logging and monitoring kernel system calls to debug process behavior and blocking calls. ([source](https://github.com/linw7/Skill-Tree/blob/master/Linux%E5%B7%A5%E5%85%B7.md))
- [Network Port Auditing](https://awesome-repositories.com/f/system-administration-monitoring/network-port-auditing.md) — Implements tools for identifying processes occupying network ports and retrieving interface configurations. ([source](https://github.com/linw7/Skill-Tree/blob/master/Linux%E5%B7%A5%E5%85%B7.md))
- [System Performance Monitors](https://awesome-repositories.com/f/system-administration-monitoring/system-performance-monitors.md) — Provides utilities for tracking real-time CPU load and memory usage to identify system resource bottlenecks. ([source](https://github.com/linw7/Skill-Tree/blob/master/Linux%E5%B7%A5%E5%85%B7.md))

### Web Development

- [CGI Script Execution](https://awesome-repositories.com/f/web-development/cgi-script-execution.md) — Demonstrates how to execute backend programs via the Common Gateway Interface to process web request parameters. ([source](https://github.com/linw7/Skill-Tree/blob/master/%E8%AE%A1%E7%AE%97%E6%9C%BA%E7%BD%91%E7%BB%9C.md))