Linux File Permissions: chmod Explained
In the world of web hosting, the security and functionality of your site largely depend on correct configuration. One of the most critical and often underestimated aspects is file and directory permissions in Linux systems. Understanding how they work and when to apply the correct permissions is fundamental to protecting your site from vulnerabilities and ensuring that all your web applications, such as WordPress or Joomla, operate smoothly. In this guide, we will explore the most common permissions—644, 755, and 777—and explain when and why you should use each one.