Linux Command Map - Bash, Who Are You?

Linux is an operating system widely used on various platforms worldwide, including servers, the cloud, and IoT devices. Through this course, you can enhance your competitiveness in the IT field based on a deep understanding of Linux. Furthermore, by acquiring expertise in open-source technology, you can prepare for the future technological landscape and stand out in a high-demand job market.

You know what Linux is and have learned some basic usage methods, but do you want to use the Linux shell better? Do you need to write Linux shell scripts? Well, it's time to learn Linux shell scripts!

If you have studied shell scripts, the next step is to learn how to effectively use the find, grep, sed, and awk commands. Don't search Google anymore to learn how to use these commands.

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.

Build a hands-on AWS environment with Terraform and learn Zabbix 8’s new features and practical monitoring operations through exercises in fault detection, Slack notifications, and recovery. Store JSON values using Zabbix 8’s Native JSON, then split out the required values with Dependent items and JSONPath. Organize the display columns for recent data and the problem overview, and compare metrics using scatter plots and inverted graph axes. Export the completed Dashboard as YAML and import it again. This course also covers the Server, Agent 2, Item, and Trigger components required for existing Zabbix operations, along with problems and recovery, Slack notifications, maintenance, official MySQL and Redis templates, and Web scenarios. Create and recover CPU, disk, Apache, and HTTP problems yourself to connect the entire workflow. Create and clean up the AWS hands-on environment with Terraform. Follow the actual sequence: saving configuration files, running fmt, init, validate, and plan, applying the saved plan, connecting via SSH, checking the state, and cleaning up the practice resources.

Instead of theory and memorization, you will naturally master 50 basic Linux commands through practice-oriented learning where you type and execute them yourself. With 95% of the entire course dedicated to hands-on practice, you can gain muscle memory for essential practical functions such as file management, permission settings, and process control. The goal is not to memorize commands, but to become familiar with Linux.

The author of "Learning the Structure and Principles of the Linux Kernel Through Debugging" provides a thorough explanation of the core interrupt concepts of the latest Linux kernel (v6.1), which are most widely used in system software.

This course puts an end to operational vulnerabilities in Linux servers caused by incorrect permissions. Completely master file and directory permission control based on real-world practical standards.

From Theory to the Field: Proving Core Competencies of a Security Expert through Wazuh+ELK SIEM Implementation Design and operate a Threat Hunting system, the core of security monitoring, firsthand. Through hands-on practice based on real-world attack scenarios, transform into a professional security engineer capable of delivering immediate results in the field.

With a good guide, the black terminal window is no longer something to fear. I’ll be your reliable companion as you journey through the world of Linux. ● Beginners with no technical background ● Students majoring in computer engineering or computer science ● Developers who need foundational training ● Those who are intimidated by a black window with white text ● Those who feel overwhelmed about launching a real service Practice environment: WSL / Virtualbox / Ubuntu 24.04 / Rocky 9 An instructor with 26 years of experience will guide you at a beginner-friendly level. One hour a day for one week, and you’ll start to see Linux.

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

✅ 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

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

The author of "Learning the Structure and Principles of the Linux Kernel Through Debugging" provides a proper explanation of the core concepts of 'Interrupt Bottom Halves' in the latest Linux kernel (v6.1), which is most widely used in system software.

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.

This course focuses not simply on how to configure NGINX, but on solving the problems that arise in interviews and real-world work when you do not understand why these structures and configurations are necessary. Based on experience serving as an interviewer at Naver, Kakao, and Toss and evaluating countless candidates, the course explains, with hands-on practice, how to describe and use NGINX from the perspectives of performance, scalability, and operations. The core of this course is helping you develop a way of thinking that allows you to understand traffic flow and track down problems, rather than merely memorize configuration values.

I have created a 'Linux for Beginners' course that is easy for non-majors to understand and can be applied in practice immediately!

This course is Part 3 of the Full-Stack course series, designed to help you thoroughly master the latest server technologies and Docker. To enable you to genuinely incorporate Docker into your tech stack, the course meticulously tests Docker’s various options, covers related technologies such as Linux that you need to understand for Docker, and is structured so that you can even build complex real-world services.