메모리허브

Bash, a powerful command-line interface, allows users to interact with the operating system by typing commands, making it easier to manage files, run programs, and automate tasks.The Big PictureImagine your computer as a large library with countless books (files and programs). Bash (Bourne Again SHell) is like a knowledgeable librarian. Instead of you wandering through the library, you tell the ..

IntroductionLinux, an open-source operating system kernel, forms the foundation of numerous operating systems, enabling users to interact with their computer hardware efficiently and securely. It's akin to a versatile engine that powers a wide array of vehicles in the computing world.The Big PictureImagine your computer as a sophisticated machine. Just as a car needs an engine to function, your ..

Jenkins is an open-source automation server that helps automate parts of software development related to building, testing, and deploying, facilitating continuous integration and continuous delivery (CI/CD).The Big PictureImagine you’re building a large skyscraper. Every day, different teams are working on different parts of the building: some are laying bricks, others are installing windows, an..

Docker is a platform that enables developers to create, deploy, and run applications in containers, which are lightweight, standalone, and executable packages that include everything needed to run a piece of software.The Big PictureImagine you have a magical box (container) that can encapsulate all the ingredients and instructions needed to cook a recipe (run an application). Regardless of where..

A reverse proxy is a server that sits between client devices and backend servers, forwarding client requests to appropriate servers and then returning the server's response to the client, enhancing load balancing, security, and performance.The Big PictureImagine a large hotel with a concierge desk. When guests arrive, they don't go directly to their rooms or different facilities. Instead, they f..

NGINX is a powerful web server and reverse proxy server known for its high performance and stability, often used to serve static content, manage incoming web traffic, and act as a load balancer.The Big PictureImagine you run a large, busy restaurant. NGINX is like the head waiter, efficiently directing customers to their tables, managing the flow of people to prevent overcrowding, and ensuring t..

Apache Tomcat is a widely-used open-source software implementation of Java Servlet, JavaServer Pages, and Java Expression Language technologies, providing a "home" for running Java-based web applications.The Big PictureImagine you want to set up a new restaurant. Tomcat is like the kitchen and staff that make and serve the food, while your web application is the restaurant menu. Your customers (..

In this lesson, we'll explore npm (Node Package Manager), how it works, and its significance in managing JavaScript packages and dependencies.The Big PictureImagine you're building a house. You need various materials like bricks, cement, wood, etc. Instead of creating these materials from scratch, you get them from suppliers. In the world of JavaScript, npm is like your supplier, providing you w..

Git is a version control system that helps track changes to files, enabling collaboration and maintaining a history of changes in a project, similar to a time machine for your code.The Big PictureImagine you're working on a big art project with friends. Everyone adds their own touches to a shared canvas. Without a system to track who did what, and when, it's easy to make mistakes or lose importa..

위치 : cat /etc/sysconfig/iptables방화벽 자동 초기화 기초 스크립트 1#! /bin/bashiptables -Fiptables -Xecho ssh 허용iptables -A INPUT -p tcp --dport 22 -j ACCEPTecho http and https 허용iptables -A INPUT -p tcp --dport 80 -j ACCEPTiptables -A INPUT -p tcp --dport 443 -j ACCEPTecho pop, imap and smtp 허용iptables -A INPUT -p tcp --dport 25 -j ACCEPTiptables -A INPUT -p tcp --dport 465 -j ACCEPTiptables -A INPUT -p tcp -..