Linux Users & Groups Explained | UID, GID & Root Access | Ep 20 скачать в хорошем качестве

Linux Users & Groups Explained | UID, GID & Root Access | Ep 20

Welcome to BuildIn10! 🚀 Do you really understand how Linux users and groups work under the hood? What exactly is UID 0? Why does every file have a user and group owner? And what actually happens when you add someone to the "sudo" or "root" group? In Episode 20, we break down Linux User and Group Management from the absolute fundamentals to practical command-line mastery. If you manage servers, deploy applications, or work in DevOps/SRE, understanding accounts, permissions, UID, and GID is non-negotiable. This is the bedrock of Linux security and access control. 📍 What You’ll Learn in This Episode: Who am I? Using whoami and id to reveal your current identity and group memberships. The "Numbers" Game: Why Linux doesn't care about your username and uses UID (User ID) and GID (Group ID) internally. Root & UID 0: Discover why UID 0 is the most powerful number on the system and how privilege escalation works. Mastering /etc/passwd: Breaking down the 7 fields of this critical file, from home directories to login shells. Exploring /etc/group: How Linux maps multiple users into a single group for shared permissions. User & Group Operations: * Creating accounts with useradd vs. adduser. Adding users to groups with usermod -aG (and why the -a is your best friend!). Creating organizational groups with groupadd. Safe Deletion: How to remove users and groups cleanly using userdel and groupdel without leaving "orphaned" files behind. 📂 Resources & Study Material 📘 Episode Notes & Cheat Sheets: https://github.com/shsahoo1504/buildi... 💬 Join our Tech Community (Discord):   / discord   🎓 Course Inspiration: https://trainingportal.linuxfoundatio... 🤝 Connect & Support LinkedIn:   / shubham-suraj-sahoo-a5557362   Linktree: https://linktr.ee/1504shubham Mentorship (Topmate): https://topmate.io/shubham_suraj_sahoo Support My Work (Buy Me A Coffee): https://www.buymeacoffee.com/1504shubhaq #Linux #LinuxUsers #LinuxGroups #UID #GID #RootUser #UserManagement #DevOps #SRE #SysAdmin #LinuxCourse #BuildIn10 #LearnLinux #AccessControl #LinuxSecurity