Systems Engineer Textbook

Add log collection, automated deployment, and real-time visualization to Zabbix! Are you receiving alerts with Zabbix but want to collect and visualize logs? Do you want to automatically deploy Zabbix Agents to hundreds of servers using Ansible? Do you want to check Webex notification logs with flashing alerts in Grafana? In this course, we provide practical, hands-on methods to further automate and visualize your real-time monitoring environment by integrating Zabbix with essential open-source tools: Grafana, Loki, Promtail, and Ansible.

Learn systematically from the basic usage to the advanced features of Zabbix, an essential tool for effective monitoring of IT infrastructure. We offer the opportunity to grow into a monitoring expert using Zabbix through real-world application examples.

In this course, you will learn how to create an intuitive and beautiful PDF in just 1 minute using VS Code and Markdown. With Markdown’s concise syntax and VS Code’s powerful features, anyone can easily create PDF documents.

This lecture teaches you how to create more professional PDFs by combining Markdown and HTML/CSS. Based on the basic usage of Markdown and VS Code learned in the previous lecture, you will learn how to apply various styles to PDFs using CSS.

An introductory course tailored for beginners that systematically teaches you how to build AWS core services and infrastructure! You can naturally learn the basics of the cloud and how to use AWS through hands-on practice.

You can understand assembly code, backtrace functions, and understand the internal structure of gdb, which traces processes. You also cover the kernel's debugging tools.

This course will guide you through the complexities of the Linux operating system, from a strong understanding of the Linux kernel to invoking system calls, process management, and file operations. You will also learn threading and interprocess communication techniques.

Linux, the most widely used operating system for servers worldwide. This is a story about the basic commands of CLI (Command Line Interface), the first step to freely handling Linux, and shell scripts created by combining those commands. This lecture resolves the questions and concerns that anyone interested in Linux would have had at the beginning.

Learn essential Linux knowledge that every developer should know, even if they're not a DevOps or Linux expert. The class will be hands-on and practice-oriented.

This course is designed for practitioners who are just starting infrastructure security audits or are consuming significant resources on manual inspections. It's a hands-on process where we build a fully automated audit system together that automates inspection items based on Electronic Financial Supervisory Regulations, performs batch inspections of dozens to hundreds of servers through Ansible, and visualizes results using Django with filtering and Excel download capabilities.

I've created a 'Linux Introduction' course that even non-majors can easily understand and apply immediately in real-world situations!

If you've ever been fascinated by people typing in unknown Linux commands on a black screen, but were at a loss as to where to start or what to do, this course is for you.

This is a lecture given directly by the author of the book <This is Ubuntu Linux> by Hanbit Media.

✅ Out of the entire series (1) ~ (7), (5) operating system, user interface, database ✅ CS101 series lectures - From basic computer theory to the latest practical examples - Provides a wide range of basic knowledge

The author of "Learning the Structure and Principles of the Linux Kernel through Debugging" properly explains the core interrupt concepts of the latest Linux kernel (v6.1), most used in system software.

Now I can analyze the Linux kernel too! The easiest kernel lecture among Linux kernel lectures.

The author of "Structure and Principles of Arm Architecture for System Software Development" will accurately grasp the core of Arm architecture (Armv8-A) and the Linux kernel interface!

This is a 'Practical Linux Troubleshooting Course' where you analyze and solve problems together with generative AI, based on a Docker practice environment that reproduces 5 representative failures that occur in actual Linux operating environments. Even those who were overwhelmed about where to start examining problems can learn the problem-solving approach and thought process of field engineers through AI guidance.

This lecture analyzes various protection techniques in the Linux kernel, methods to bypass them, and various vulnerabilities. Practical examples are provided for each lecture.

This course puts an end to Linux server operational vulnerabilities caused by incorrect permissions. Master file and directory permission control based on real-world industry standards.

Software development roles in the defense industry: ✔ Have different hiring criteria compared to general IT companies ✔ Use specialized tech stacks and development methodologies ✔ Offer very little information on how to effectively highlight your major, career, and projects. This course: 👉 Provides the perspective of a software developer who has experienced actual defense projects and hiring processes 👉 Explains how defense companies evaluate software developers 👉 Focuses on specific case studies to show you how to prepare your resume, interviews, and projects to increase your chances of success. This course transforms the state of "wanting to become a defense software developer but having no idea what to prepare" into a "clear roadmap you can start following right now."

In this course, you will learn how to have a free Linux server worth 20,000 won per month, how to use it, and how to utilize it.

Linux for Beginners: Mastering the Command Line. The ultimate course for Linux administration in corporate jobs. Unlock the power of the Linux operating system with this comprehensive beginner-friendly course. Whether new to IT or wanting to advance technical skills, this course will take one from zero to proficient in Linux fundamentals. Learn to navigate the command line, manage files and directories, handle permissions, and automate tasks with shell scripting. What You'll Learn: How to Navigate the Linux File System and Master the Command Line Managing users, groups, and file permissions for secure access Installing, updating, and removing software with package managers Basic system administration and troubleshooting skills With hands-on labs and real-world examples, you’ll quickly build confidence in managing Linux environments. By the end of this course, you’ll have a strong understanding of essential Linux concepts like file permissions, process management, and network configuration. Also, this course covers basic networking, disk management, and process monitoring. Whether you have a career goal in the realms of DevOps, cybersecurity, or cloud engineering, learn Linux today to make more career opportunities pop open in IT, DevOps, SRE, Support, IT helpdesk, IT Admin, cybersecurity, or software development! Practical Skills for Self-Confidence on Any Linux-based System Boost Your Tech Portfolio

This course is Part 3 of the Full Stack lecture series, designed to help you solidly master the latest server technologies and Docker. The course is structured to enable you to practically incorporate Docker into your tech stack by meticulously testing Docker's various options, learning related technologies such as Linux that are necessary for understanding Docker, and building actual complex services.