Introduction to Linux

Introducing Linux and Unix

What is Unix?

• Unix is a family of operating systems
• Popular Unix-based OSs include:
  • Oracle Solaris (and Open Solaris)
  • FreeBSD
  • HP-UX
  • IBM AIX
  • Apple macOS

UNIX beginnings:

Linux’s beginnings:

Linux, use cases today:

• Android
• Supercomputers
• Data Centers and Cloud Servers
• PCs

Overview of Linux Architecture

Kernel

• Lowest-level software in system
• Starts on boot and remains in memory
• Bridge between apps and hardware
• Key jobs:
  • Memory management
  • Process management
  • Device drivers
  • System calls and security

Linux filesystem:

Linux Terminal Overview

Communicating with Linux System: