Basic Linux (Ubuntu) knowledge for developers

Even if the black terminal feels unfamiliar, you can get started. Yalco, an IT YouTuber with 130,000 subscribers, guides you from the basics of using Linux to server administration through easy-to-understand analogies and examples. Learn commands, files, permissions, and networking, then practice automatic execution, log checks, updates and rollbacks, and backup restoration hands-on with a basic web app that displays announcements and a list of resources.

This lecture will teach you the basic commands required for performance analysis of Linux servers, how to use the tcpdump command to solve network problems, and troubleshooting methods based on cases. Through this lecture, you will be able to solve various performance problems that occur on Linux servers.

To those of you hesitating whether to study Linux shell scripting, I will tell you just one thing. Do you want to handle Linux coolly like a hacker? Can you imagine a hacker who doesn't know shell scripting? Then start right now!

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.

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.

Creating the same up-to-date app development environment by installing Nix on Mac, MS Windows, NixOS, all Linux distributions, and Synology NAS.

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 course is a “Core Practical Linux” course designed not only for those encountering Linux for the first time, but also for those looking to enhance their Linux skills in practice. It covers the essential fundamentals of Linux, along with only the most frequently used and indispensable features from the perspective of a backend developer in the field.

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.