Linux Introduction

• Unix-like OS distributed free of charge under the GNU license
• Available in several “distributions” to serve different purposes
• Originally written by Linus Torvalds
• Now almost 10,000 developers including major technology companies like intel and IBM

Where is Linux used

• Majority of internet serves run linux
• 67% of world’s web servers run linux (2016)
• Used in research and high-performance computing
• Google, Amazon, NSA, 100% of TOP500 Super-Computers
• IoT devices

Why Linux

• Numerous Cybersecurity tools for linux
  • majority of tools are free
• Linux allows you complete control of the system
• Linux can be made more secure
  • Open Source
  • Entirely customizable
  • Windows and Mac have processes you can’t disable

Linux Command Line

• Interface to the underlying OS
• Built in Commands
• Environment Variables