What is Linux?
Linux is a free and open-source operating system kernel that powers millions of devices worldwide.
It's known for its stability, security, and flexibility. Created by Linus Torvalds in 1991, Linux
has grown into a powerful platform used in everything from smartphones to supercomputers.
Key Concepts
Open Source Philosophy
- Free to use and modify
- Community-driven development
- Transparent codebase
- Collaborative improvement
File System Structure
- Hierarchical directory structure
- Everything is a file
- Case-sensitive naming
- Root directory (/)
User Permissions
- User and group management
- File permissions (read, write, execute)
- Superuser (root) privileges
- Security through permissions
Package Management
- Software repositories
- Package managers (apt, yum, pacman)
- Dependency resolution
- System updates