linux ppt

1. Introduction to Linux OS

2. What is Linux?
• - Linux is an open-source, Unix-like operating
system.
• - Created by Linus Torvalds in 1991.
• - Known for stability, security, and flexibility.
• - Used on servers, desktops, and embedded
systems.

3. Features of Linux
• - Open Source and Free
• - Multi-user and Multi-tasking
• - Highly Secure and Stable
• - Customizable and Modular
• - Command-Line Interface (CLI) and Graphical
User Interface (GUI)

4. Linux File System Structure
• - Root Directory: /
• - /home: User Files
• - /etc: Configuration Files
• - /var: Variable Data
• - /usr: User Programs and Utilities

5. Basic Linux Commands
• - ls: List Files
• - cd: Change Directory
• - pwd: Print Working Directory
• - mkdir: Create Directory
• - rm: Remove Files/Directories

6. User Management in Linux
• - whoami: Display Current User
• - adduser: Add a New User
• - passwd: Change Password
• - userdel: Delete a User
• - sudo: Execute as Superuser

7. Package Management
• - apt: Debian/Ubuntu
• - yum/dnf: RHEL/Fedora
• - pacman: Arch Linux
• - Install Example: sudo apt install <package>
• - Update Example: sudo apt update && sudo
apt upgrade

8. Process Management
• - ps: View Running Processes
• - top: Real-Time Process Monitoring
• - kill: Terminate a Process
• - htop: Interactive Process Viewer
• - Example: kill <PID>

9. File Permissions in Linux
• - Read (r), Write (w), Execute (x)
• - chmod: Change Permissions
• - chown: Change Ownership
• - Example: chmod +x script.sh
• - View Permissions: ls -l

10. Popular Linux Distributions
• - Ubuntu (User-Friendly)
• - Fedora (Cutting Edge)
• - Debian (Stable Base)
• - Arch Linux (Customizable)
• - CentOS (Enterprise)

11. Why Use Linux?
• - Free and Open Source
• - Security and Privacy
• - Lightweight and Fast
• - Ideal for Servers and Development
• - Large Community Support