List of Step by Step Manuals, Howto Guide & Tutorials for Every Software Engineers

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Shell/Command line

  ๐Ÿ”ธ pure-bash-bible – is a collection of pure bash alternatives to external processes.
  ๐Ÿ”ธ pure-sh-bible – is a collection of pure POSIX sh alternatives to external processes.
  ๐Ÿ”ธ bash-guide – is a guide to learn bash.
  ๐Ÿ”ธ bash-handbook – for those who wanna learn Bash.
  ๐Ÿ”ธ The Bash Hackers Wiki – hold documentation of any kind about GNU Bash.
  ๐Ÿ”ธ Shell & Utilities – describes the commands offered to application programs by POSIX-conformant systems.
  ๐Ÿ”ธ the-art-of-command-line – master the command line, in one page.
  ๐Ÿ”ธ Shell Style Guide – a shell style guide for Google-originated open-source projects.

โ–ช๏ธ Text Editors

  ๐Ÿ”ธ Vim Cheat Sheet – great multi language vim guide.

โ–ช๏ธ Python

  ๐Ÿ”ธ Awesome Python – a curated list of awesome Python frameworks, libraries, software and resources.
  ๐Ÿ”ธ python-cheatsheet – comprehensive Python cheatsheet.
  ๐Ÿ”ธ – basic reference for beginner and advanced developers.

โ–ช๏ธ Sed & Awk & Other

  ๐Ÿ”ธ Fโ€™Awk Yeah! – advanced sed and awk usage (Parsing for Pentesters 3).

โ–ช๏ธ *nix & Network

  ๐Ÿ”ธ nixCraft – linux and unix tutorials for new and seasoned sysadmin.
  ๐Ÿ”ธ TecMint – the ideal Linux blog for Sysadmins & Geeks.
  ๐Ÿ”ธ Omnisecu – free Networking, System Administration and Security tutorials.
  ๐Ÿ”ธ linux-cheat – Linux tutorials and cheatsheets. Minimal examples. Mostly user-land CLI utilities.
  ๐Ÿ”ธ linuxupskillchallenge – learn the skills required to sysadmin.
  ๐Ÿ”ธ Unix Toolbox – Unix/Linux/BSD commands and tasks which are useful for IT work or for advanced users.
  ๐Ÿ”ธ Linux Kernel Teaching – is a collection of lectures and labs Linux kernel topics.
  ๐Ÿ”ธ htop explained – explanation of everything you can see in htop/top on Linux.
  ๐Ÿ”ธ Linux Guide and Hints – tutorials on system administration in Fedora and CentOS.
  ๐Ÿ”ธ strace-little-book – a little book which introduces strace.
  ๐Ÿ”ธ linux-tracing-workshop – examples and hands-on labs for Linux tracing tools workshops.
  ๐Ÿ”ธ http2-explained – a detailed document explaining and documenting HTTP/2.
  ๐Ÿ”ธ http3-explained – a document describing the HTTP/3 and QUIC protocols.
  ๐Ÿ”ธ HTTP/2 in Action – an excellent introduction to the new HTTP/2 standard.
  ๐Ÿ”ธ Let’s code a TCP/IP stack – great stuff to learn network and system programming at a deeper level.
  ๐Ÿ”ธ Nginx Admin’s Handbook – how to improve NGINX performance, security and other important things.
  ๐Ÿ”ธ – NGINX config generator on steroids.
  ๐Ÿ”ธ openssh guideline – is to help operational teams with the configuration of OpenSSH server and client.
  ๐Ÿ”ธ SSH Handshake Explained – is a relatively brief description of the SSH handshake.
  ๐Ÿ”ธ ISC’s Knowledgebase – you’ll find some general information about BIND 9, ISC DHCP, and Kea DHCP.
  ๐Ÿ”ธ – a place to record notes while studying for Cisco’s CCNP certification.

โ–ช๏ธ Microsoft

  ๐Ÿ”ธ AD-Attack-Defense – attack and defend active directory using modern post exploitation activity.

โ–ช๏ธ Large-scale systems

  ๐Ÿ”ธ The System Design Primer – learn how to design large-scale systems.
  ๐Ÿ”ธ Awesome Scalability – best practices in building High Scalability, High Availability, High Stability, and more.
  ๐Ÿ”ธ Web Architecture 101 – the basic architecture concepts.

โ–ช๏ธ System hardening

  ๐Ÿ”ธ CIS Benchmarks – secure configuration settings for over 100 technologies, available as a free PDF.
  ๐Ÿ”ธ Security Harden CentOS 7 – this walks you through the steps required to security harden CentOS.
  ๐Ÿ”ธ CentOS 7 Server Hardening Guide – great guide for hardening CentOS; familiar with OpenSCAP.
  ๐Ÿ”ธ awesome-security-hardening – is a collection of security hardening guides, tools and other resources.
  ๐Ÿ”ธ The Practical Linux Hardening Guide – provides a high-level overview of hardening GNU/Linux systems.
  ๐Ÿ”ธ Linux Hardening Guide – how to harden Linux as much as possible for security and privacy.

โ–ช๏ธ Security & Privacy

  ๐Ÿ”ธ Hacking Articles – LRaj Chandel’s Security & Hacking Blog.
  ๐Ÿ”ธ AWS security tools – make your AWS cloud environment more secure.
  ๐Ÿ”ธ Rawsec’s CyberSecurity Inventory – an inventory of tools and resources about CyberSecurity.
  ๐Ÿ”ธ The Illustrated TLS Connection – every byte of a TLS connection explained and reproduced.
  ๐Ÿ”ธ SSL Research – SSL and TLS Deployment Best Practices by SSL Labs.
  ๐Ÿ”ธ SELinux Game – learn SELinux by doing. Solve Puzzles, show skillz.
  ๐Ÿ”ธ Certificates and PKI – everything you should know about certificates and PKI but are too afraid to ask.
  ๐Ÿ”ธ The Art of Subdomain Enumeration – a reference for subdomain enumeration techniques.
  ๐Ÿ”ธ Quitting Google – the comprehensive guide to quitting Google.

โ–ช๏ธ Web Apps

  ๐Ÿ”ธ OWASP – worldwide not-for-profit charitable organization focused on improving the security of software.
  ๐Ÿ”ธ OWASP ASVS 3.0.1 – OWASP Application Security Verification Standard Project.
  ๐Ÿ”ธ OWASP ASVS 3.0.1 Web App – simple web app that helps developers understand the ASVS requirements.
  ๐Ÿ”ธ OWASP ASVS 4.0 – is a list of application security requirements or tests.
  ๐Ÿ”ธ OWASP Testing Guide v4 – includes a “best practice” penetration testing framework.
  ๐Ÿ”ธ OWASP Dev Guide – this is the development version of the OWASP Developer Guide.
  ๐Ÿ”ธ OWASP WSTG – is a comprehensive open source guide to testing the security of web apps.
  ๐Ÿ”ธ OWASP API Security Project – focuses specifically on the top ten vulnerabilities in API security.
  ๐Ÿ”ธ Mozilla Web Security – help operational teams with creating secure web applications.
  ๐Ÿ”ธ security-bulletins – security bulletins that relate to Netflix Open Source.
  ๐Ÿ”ธ API-Security-Checklist – security countermeasures when designing, testing, and releasing your API.
  ๐Ÿ”ธ Enable CORS – enable cross-origin resource sharing.
  ๐Ÿ”ธ Application Security Wiki – is an initiative to provide all application security related resources at one place.
  ๐Ÿ”ธ Weird Proxies – reverse proxy related attacks; it is a result of analysis of various proxies.
  ๐Ÿ”ธ Webshells – great series about malicious payloads.
  ๐Ÿ”ธ Practical Web Cache Poisoning – show you how to compromise websites by using esoteric web features.
  ๐Ÿ”ธ Hidden directories and files – as a source of sensitive information about web application.
  ๐Ÿ”ธ Explosive blog – great blog about cybersec and pentests.
  ๐Ÿ”ธ Security Cookies – this paper will take a close look at cookie security.
  ๐Ÿ”ธ APISecurityBestPractices – help you keep secrets (API keys, db credentials, certificates) out of source code.

โ–ช๏ธ All-in-one

  ๐Ÿ”ธ LZone Cheat Sheets – all cheat sheets.
  ๐Ÿ”ธ Danโ€™s Cheat Sheetsโ€™s – massive cheat sheets documentation.
  ๐Ÿ”ธ Rico’s cheatsheets – this is a modest collection of cheatsheets.
  ๐Ÿ”ธ DevDocs API – combines multiple API documentations in a fast, organized, and searchable interface.
  ๐Ÿ”ธ – the only cheat sheet you need.
  ๐Ÿ”ธ – collection of cheat sheets about bash, vim and networking.

โ–ช๏ธ Ebooks

  ๐Ÿ”ธ free-programming-books – list of free learning resources in many languages.

โ–ช๏ธ Other

  ๐Ÿ”ธ CTF Series : Vulnerable Machines – the steps below could be followed to find vulnerabilities and exploits.
  ๐Ÿ”ธ 50M_CTF_Writeup – $50 million CTF from Hackerone – writeup.
  ๐Ÿ”ธ ctf-tasks – an archive of low-level CTF challenges developed over the years.
  ๐Ÿ”ธ How to start RE/malware analysis? – collection of some hints and useful links for the beginners.
  ๐Ÿ”ธ The C10K problem – it’s time for web servers to handle ten thousand clients simultaneously, don’t you think?
  ๐Ÿ”ธ How 1500 bytes became the MTU of the internet – great story about the Maximum Transmission Unit.
  ๐Ÿ”ธ poor man’s profiler – like dtrace’s don’t really provide methods to see what programs are blocking on.
  ๐Ÿ”ธ HTTPS on Stack Overflow – this is the story of a long journey regarding the implementation of SSL.
  ๐Ÿ”ธ Julia’s Drawings – some drawings about programming and unix world, zines about systems & debugging tools.
  ๐Ÿ”ธ Hash collisions – this great repository is focused on hash collisions exploitation.
  ๐Ÿ”ธ sha256-animation – animation of the SHA-256 hash function in your terminal.
  ๐Ÿ”ธ BGP Meets Cat – after 3072 hours of manipulating BGP, Job Snijders has succeeded in drawing a Nyancat.
  ๐Ÿ”ธ bgp-battleships – playing battleships over BGP.
  ๐Ÿ”ธ What happens when… – you type into your browser and press enter?
  ๐Ÿ”ธ how-web-works – based on the ‘What happens when…’ repository.
  ๐Ÿ”ธ HTTPS in the real world – great tutorial explain how HTTPS works in the real world.
  ๐Ÿ”ธ Gitlab and NFS bug – how we spent two weeks hunting an NFS bug in the Linux kernel.
  ๐Ÿ”ธ Gitlab melts down – postmortem on the database outage of January 31 2017 with the lessons we learned.
  ๐Ÿ”ธ How To Become A Hacker – if you want to be a hacker, keep reading.
  ๐Ÿ”ธ Operation Costs in CPU – should help to estimate costs of certain operations in CPU clocks.
  ๐Ÿ”ธ Let’s Build a Simple Database – writing a sqlite clone from scratch in C.
  ๐Ÿ”ธ simple-computer – great resource to understand how computers work under the hood.
  ๐Ÿ”ธ The story of “Have I been pwned?” – working with 154 million records on Azure Table Storage.
  ๐Ÿ”ธ TOP500 Supercomputers – shows the 500 most powerful commercially available computer systems known to us.
  ๐Ÿ”ธ How to build a 8 GPU password cracker – any “black magic” or hours of frustration like desktop components do.
  ๐Ÿ”ธ CERN Data Centre – 3D visualizations of the CERN computing environments (and more).
  ๐Ÿ”ธ How fucked is my database – evaluate how fucked your database is with this handy website.
  ๐Ÿ”ธ Linux Troubleshooting 101 , 2016 Edition – everything is a DNS Problem…
  ๐Ÿ”ธ Five Whys – you know what the problem is, but you cannot solve it?
  ๐Ÿ”ธ Maersk, me & notPetya – how did ransomware successfully hijack hundreds of domain controllers?
  ๐Ÿ”ธ – how HTTPS works …in a comic!
  ๐Ÿ”ธ – a fun and colorful explanation of how DNS works.
  ๐Ÿ”ธ POSTGRESQLCO.NF – your postgresql.conf documentation and recommendations.

Inspiring Lists  [TOC]

โ–ช๏ธ SysOps/DevOps

  ๐Ÿ”ธ Awesome Sysadmin – amazingly awesome open source sysadmin resources.
  ๐Ÿ”ธ Awesome Shell – awesome command-line frameworks, toolkits, guides and gizmos.
  ๐Ÿ”ธ Command-line-text-processing – finding text to search and replace, sorting to beautifying, and more.
  ๐Ÿ”ธ Awesome Pcaptools – collection of tools developed by other researchers to process network traces.
  ๐Ÿ”ธ awesome-ebpf – a curated list of awesome projects related to eBPF.
  ๐Ÿ”ธ Linux Network Performance – where some of the network sysctl variables fit into the Linux/Kernel network flow.
  ๐Ÿ”ธ Awesome Postgres – list of awesome PostgreSQL software, libraries, tools and resources.
  ๐Ÿ”ธ quick-SQL-cheatsheet – a quick reminder of all SQL queries and examples on how to use them.
  ๐Ÿ”ธ Awesome-Selfhosted – list of Free Software network services and web applications which can be hosted locally.
  ๐Ÿ”ธ List of applications – huge list of apps sorted by category, as a reference for those looking for packages.
  ๐Ÿ”ธ CS-Interview-Knowledge-Map – build the best interview map.
  ๐Ÿ”ธ DevOps-Guide – DevOps Guide from basic to advanced with Interview Questions and Notes.
  ๐Ÿ”ธ FreeBSD Journal – it is a great list of periodical magazines about FreeBSD and other important things.
  ๐Ÿ”ธ devops-interview-questions – contains interview questions on various DevOps and SRE related topics.

โ–ช๏ธ Developers

  ๐Ÿ”ธ Web Developer Roadmap – roadmaps, articles and resources to help you choose your path, learn and improve.
  ๐Ÿ”ธ Front-End-Checklist – the perfect Front-End Checklist for modern websites and meticulous developers.
  ๐Ÿ”ธ Front-End-Performance-Checklist – Front-End Performance Checklist that runs faster than the others.
  ๐Ÿ”ธ Python’s Magic Methods – what are magic methods? They’re everything in object-oriented Python.
  ๐Ÿ”ธ wtfpython – a collection of surprising Python snippets and lesser-known features.
  ๐Ÿ”ธ js-dev-reads – a list of books and articles for the discerning web developer to read.
  ๐Ÿ”ธ Commit messages guide – a guide to understand the importance of commit messages.

โ–ช๏ธ Security/Pentesting

  ๐Ÿ”ธ Awesome Web Security – a curated list of Web Security materials and resources.
  ๐Ÿ”ธ awesome-cyber-skills – a curated list of hacking environments where you can train your cyber skills.
  ๐Ÿ”ธ awesome-devsecops – an authoritative list of awesome devsecops tools.
  ๐Ÿ”ธ awesome-osint – is a curated list of amazingly awesome OSINT.
  ๐Ÿ”ธ HolyTips – tips and tutorials on Bug Bounty Hunting and Web App Security.
  ๐Ÿ”ธ awesome-threat-intelligence – a curated list of Awesome Threat Intelligence resources.
  ๐Ÿ”ธ Red-Teaming-Toolkit – a collection of open source and commercial tools that aid in red team operations.
  ๐Ÿ”ธ awesome-burp-extensions – a curated list of amazingly awesome Burp Extensions.
  ๐Ÿ”ธ Free Security eBooks – list of a Free Security and Hacking eBooks.
  ๐Ÿ”ธ Hacking-Security-Ebooks – top 100 Hacking & Security E-Books.
  ๐Ÿ”ธ privacy-respecting – curated list of privacy respecting services and software.
  ๐Ÿ”ธ reverse-engineering – list of awesome reverse engineering resources.
  ๐Ÿ”ธ linux-re-101 – a collection of resources for linux reverse engineering.
  ๐Ÿ”ธ reverseengineering-reading-list – a list of Reverse Engineering articles, books, and papers.
  ๐Ÿ”ธ Awesome-WAF – a curated list of awesome web-app firewall (WAF) stuff.
  ๐Ÿ”ธ awesome-shodan-queries – interesting, funny, and depressing search queries to plug into
  ๐Ÿ”ธ RobotsDisallowed – a curated list of the most common and most interesting robots.txt disallowed directories.
  ๐Ÿ”ธ HackingNeuralNetworks – is a small course on exploiting and defending neural networks.
  ๐Ÿ”ธ wildcard-certificates – why you probably shouldn’t use a wildcard certificate.
  ๐Ÿ”ธ Don’t use VPN services – which is what every third-party “VPN provider” does.
  ๐Ÿ”ธ awesome-yara – a curated list of awesome YARA rules, tools, and people.
  ๐Ÿ”ธ macOS-Security-and-Privacy-Guide – guide to securing and improving privacy on macOS.
  ๐Ÿ”ธ macos_security – macOS Security Compliance Project.
  ๐Ÿ”ธ awesome-sec-talks – is a collected list of awesome security talks.
  ๐Ÿ”ธ Movies for Hackers – list of movies every hacker & cyberpunk must watch.
  ๐Ÿ”ธ Cryptography_1 – materials used whilst taking Prof. Dan Boneh Stanford Crypto course.
  ๐Ÿ”ธ Crypton – library to learn and practice Offensive and Defensive Cryptography.

โ–ช๏ธ Other

  ๐Ÿ”ธ Cheatography – over 3,000 free cheat sheets, revision aids and quick references.
  ๐Ÿ”ธ awesome-static-analysis – static analysis tools for all programming languages.
  ๐Ÿ”ธ computer-science – path to a free self-taught education in Computer Science.
  ๐Ÿ”ธ post-mortems – is a collection of postmortems (config errors, hardware failures, and more).
  ๐Ÿ”ธ build-your-own-x – build your own (insert technology here).
  ๐Ÿ”ธ Project-Based-Tutorials-in-C – is a curated list of project-based tutorials in C.
  ๐Ÿ”ธ The-Documentation-Compendium – various README templates & tips on writing high-quality documentation.
  ๐Ÿ”ธ awesome-python-applications – free software that works great, and also happens to be open-source Python.
  ๐Ÿ”ธ awesome-public-datasets – a topic-centric list of HQ open datasets.
  ๐Ÿ”ธ machine-learning-algorithms – a curated list of all machine learning algorithms and concepts.

Blogs/Podcasts/Videos  [TOC]

โ–ช๏ธ SysOps/DevOps

  ๐Ÿ”ธ Varnish for PHP developers – very interesting presentation of Varnish by Mattias Geniar.
  ๐Ÿ”ธ A Netflix Guide to Microservices – talks about the chaotic and vibrant world of microservices at Netflix.

โ–ช๏ธ Developers

  ๐Ÿ”ธ Comparing C to machine lang – compare a simple C app with the compiled machine code of that program.

โ–ช๏ธ Geeky Persons

  ๐Ÿ”ธ Brendan Gregg’s Blog – is an industry expert in computing performance and cloud computing.
  ๐Ÿ”ธ Gynvael “GynDream” Coldwind – is a IT security engineer at Google.
  ๐Ÿ”ธ Michaล‚ “lcamtuf” Zalewski – white hat hacker, computer security expert.
  ๐Ÿ”ธ Mattias Geniar – developer, sysadmin, blogger, podcaster and public speaker.
  ๐Ÿ”ธ Nick Craver – software developer and systems administrator for Stack Exchange.
  ๐Ÿ”ธ Scott Helme – security researcher, speaker and founder of and
  ๐Ÿ”ธ Brian Krebs – The Washington Post and now an Independent investigative journalist.
  ๐Ÿ”ธ Bruce Schneier – is an internationally renowned security technologist, called a “security guru”.
  ๐Ÿ”ธ Chrissy Morgan – advocate of practical learning, Chrissy also takes part in bug bounty programs.
  ๐Ÿ”ธ Andy Gill – is a hacker at heart who works as a senior penetration tester.
  ๐Ÿ”ธ Daniel Miessler – cybersecurity expert and writer.
  ๐Ÿ”ธ Samy Kamkar – is an American privacy and security researcher, computer hacker.
  ๐Ÿ”ธ Javvad Malik – is a security advocate at AlienVault, a blogger event speaker and industry commentator.
  ๐Ÿ”ธ Graham Cluley – public speaker and independent computer security analyst.
  ๐Ÿ”ธ Kacper Szurek – detection engineer at ESET.
  ๐Ÿ”ธ Troy Hunt – web security expert known for public education and outreach on security topics.
  ๐Ÿ”ธ – sysadmin specializing in building high availability cloud environments.
  ๐Ÿ”ธ Robert Penz – IT security expert.

โ–ช๏ธ Geeky Blogs

  ๐Ÿ”ธ Linux Audit – the Linux security blog about auditing, hardening and compliance by Michael Boelen.
  ๐Ÿ”ธ Linux Security Expert – trainings, howtos, checklists, security tools, and more.
  ๐Ÿ”ธ The Grymoire – collection of useful incantations for wizards, be you computer wizards, magicians, or whatever.
  ๐Ÿ”ธ Secjuice – is the only non-profit, independent and volunteer led publication in the information security space.
  ๐Ÿ”ธ Decipher – security news that informs and inspires.

โ–ช๏ธ Geeky Vendor Blogs

  ๐Ÿ”ธ Tenable Podcast – conversations and interviews related to Cyber Exposure, and more.
  ๐Ÿ”ธ Sophos – threat news room, giving you news, opinion, advice and research on computer security issues.
  ๐Ÿ”ธ Tripwire State of Security – blog featuring the latest news, trends and insights on current security issues.
  ๐Ÿ”ธ Malwarebytes Labs Blog – security blog aims to provide insider news about cybersecurity.
  ๐Ÿ”ธ TrustedSec – latest news, and trends about cybersecurity.
  ๐Ÿ”ธ PortSwigger Web Security Blog – about web app security vulns and top tips from our team of web security.
  ๐Ÿ”ธ AT&T Cybersecurity blog – news on emerging threats and practical advice to simplify threat detection.
  ๐Ÿ”ธ Thycotic – where CISOs and IT Admins come to learn about industry trends, IT security, and more.

โ–ช๏ธ Geeky Cybersecurity Podcasts

  ๐Ÿ”ธ Risky Business – is a weekly information security podcast featuring news and in-depth interviews.
  ๐Ÿ”ธ Cyber, by Motherboard – stories, and focus on the ideas about cybersecurity.
  ๐Ÿ”ธ Tenable Podcast – conversations and interviews related to Cyber Exposure, and more.
  ๐Ÿ”ธ Cybercrime Investigations – podcast by Geoff White about cybercrimes.
  ๐Ÿ”ธ The many hats club – featuring stories from a wide range of Infosec people (Whitehat, Greyhat and Blackhat).
  ๐Ÿ”ธ Darknet Diaries – true stories from the dark side of the Internet.
  ๐Ÿ”ธ OSINTCurious Webcasts – is the investigative curiosity that helps people be successful in OSINT.
  ๐Ÿ”ธ Security Weekly – the latest information security and hacking news.

โ–ช๏ธ Geeky Cybersecurity Video Blogs

  ๐Ÿ”ธ rev3rse security – offensive, binary exploitation, web app security, hardening, red team, blue team.
  ๐Ÿ”ธ LiveOverflow – a lot more advanced topics than what is typically offered in paid online courses – but for free.
  ๐Ÿ”ธ J4vv4D – the important information regarding our internet security.
  ๐Ÿ”ธ CyberTalks – talks, interviews, and article about cybersecurity.

Build your own DNS Servers

  ๐Ÿ”ธ Unbound DNS Tutorial – a validating, recursive, and caching DNS server.
  ๐Ÿ”ธ Knot Resolver on Fedora – how to get faster and more secure DNS resolution with Knot Resolver on Fedora.
  ๐Ÿ”ธ DNS-over-HTTPS – tutorial to setup your own DNS-over-HTTPS (DoH) server.
  ๐Ÿ”ธ dns-over-https – a cartoon intro to DNS over HTTPS.
  ๐Ÿ”ธ DNS-over-TLS – following to your DoH server, setup your DNS-over-TLS (DoT) server.
  ๐Ÿ”ธ DNS Servers – how (and why) i run my own DNS Servers.

Build your own Certificate Authority

  ๐Ÿ”ธ OpenSSL Certificate Authority – build your own certificate authority (CA) using the OpenSSL tools.
  ๐Ÿ”ธ step-ca Certificate Authority – build your own certificate authority (CA) using open source step-ca.

Build your own System/Virtual Machine

ย ย ๐Ÿ”ธย os-tutorialย – how to create an OS from scratch.
ย ย ๐Ÿ”ธย Write your Own Virtual Machineย – how to write your own virtual machine (VM).
ย ย ๐Ÿ”ธย x86 Bare Metal Examplesย – dozens of minimal operating systems to learn x86 system programming.
ย ย ๐Ÿ”ธย simple-computerย – the scott CPU from “But How Do It Know?” by J. Clark Scott.
ย ย ๐Ÿ”ธย littleosbookย – the little book about OS development.

Rajesh Kumar
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