Linux File Permissions Explained in Hindi 🔐 | chmod, chown, SUID & ACL | Ethical Hacking Ep 42

🔐 *Linux File Permissions, Ownership & Privilege Security | Episode 42* Welcome to *GlobalTech Infosystems* and the ETHICAL HACKING MASTER COURSE — Beginner → Intermediate → Advanced → Professional! In Episode 42, learn Linux file permissions and ownership step by step in Hindi, with practical examples designed for aspiring ethical hackers, Linux administrators, cybersecurity analysts and IT professionals. Understand how Linux controls who can read, modify, execute and access files and directories. Learn to inspect permissions, identify risky configurations and apply the principle of least privilege. 📚 *What you will learn in this episode:* ✅ Linux users, groups, UID and GID ✅ Understanding `ls -l` and `stat` ✅ Read, write and execute permissions ✅ Symbolic permissions and numeric modes ✅ `chmod`, `chown` and `chgrp` ✅ Common permissions: 600, 640, 644, 700, 750 and 755 ✅ File permissions vs directory permissions ✅ Understanding `umask` ✅ SUID, SGID and the sticky bit ✅ ACL basics using `getfacl` and `setfacl` ✅ Defensive Linux permission auditing ✅ World-writable files and ownership review ✅ Eight practical examples and security case studies ✅ Knowledge-check quiz and security best practices 💻 *Example commands covered:* `ls -l` `stat report.txt` `chmod 640 report.txt` `chown labuser:labgroup report.txt` `umask` `getfacl report.txt` These commands are explained in the context of an authorized training lab. Exact behavior and output may vary by Linux distribution, filesystem and security configuration. 🎯 *Who should watch?* Beginners learning Linux and ethical hacking Cybersecurity students SOC analysts and security investigators Linux system administrators IT support and infrastructure professionals Learners preparing for practical security work 🛡️ *Ethical and responsible learning:* Practise only on systems you own or have explicit authorization to administer. Use a test environment, inspect before modifying permissions and never apply broad permission changes to production systems without approval. 🚀 *Continue learning with GlobalTech Infosystems!* Subscribe for detailed Hindi tutorials covering Linux, networking, ethical hacking, cybersecurity, system administration and practical IT skills. 👍 Like this episode, share it with fellow learners and comment with your questions. *Course:* ETHICAL HACKING MASTER COURSE — Beginner → Intermediate → Advanced → Professional *Episode:* 42 — Linux File Permissions, Ownership & Privilege Security *Channel:* GlobalTech Infosystems