Goal: Introduction to what Linux is.

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What is Linux and Linux Distributions (distro)

What is an Operating System?

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• Linux is an Operating Systems – similar to Windows, Mac OS, iOS, Android.

• Linux is open-source – freely available – so you can download, modify and redistribute.

• Due to this there are 10s of varieties of Linux Distributions (distros):

  • Debian

    • Ubuntu (based on Debian)

  • Fedora

    • Amazon Linux 2

  • Commercial: Red Hat (which we are using today)

    • Rocky Linux

• There is a lot of commonality across these distros.

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Types of Environments

Types of Environment:

• Desktop: Windows type Graphical User Interface (GUI)  - mouse point and click.

• Terminal: Program that opens a graphical window and runs a:

  • Shell which is a command interpreter that processes the typed commands.

    • Interface to the OS.

    • Provides a Command-Line Interface (CLI) – text-based input/output.

    • Different Shells share common commands, but syntax and behavior can be different.

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