Lesson 1: Choosing an Operating System

• Types of OSs

  • Linux-Based

    • Enterprise
      • tends to be more geared towards non-GUI based
    • Consumer

  • UNIX - available usually for commercial purposes like AIX or HP-UX.

    • Irix
    • Solaris
    • HP-UX
    • AIX
    • FreeBSD, NetBSD, OpenBSD

  • macOS

    • based on BSD Unix
    • Darwin

  • Windows-Based

    • Servers
      • There is no option to choose between GUI and command-line only
    • Desktop

    As was discussed earlier, Linux kernel was developed by Linus Torvalds, a student from Finland. It is under the GPLv2 license. (the kernel is)

    Ubuntu and RedHat are examples of distributions (previously discussed in previous Topics)

    Linux Distributions have three categories

    • Enterprise Grade (usually contain Enterprise in their names)

    • designed to be deployed within large organizations using enterprise hardware

    • higher requirements for stability of their hardware and software

    • older releases of the kernel as they are known for work reliability

      • Red Hat - 10 years support
      • CentOS
      • SUSE
      • Debian GNU/Linux
      • Ubuntu LTS - 5 years support

    • Consumer Grade

    • targeted for small business, home, or hobbyists

    • contain the latest drivers to make the most of new hardware

      • Fedora
      • Ubuntu non-LTS - 3 release support
      • openSUSE

    • Experimental and Hacker Linux Distributions

    • based on cutting edge technology

    • contain the most recent versions of software that may contain bugs or untested features

    • rolling release model to allow for updates at any time

    • made for advanced users that want to receive the most recent software and understand functionality may break

      • Arch
      • Gentoo
      • Kali

    • Linux on servers are common practice in larger companies. They are often masked due to embedded systems

    • client-side doesn’t see the back end and due to applications being virtualized or containerized (like with the cloud) the OS is masked

Lesson 4.2: Understanding Computer Hardware

Lesson 4.3: Where Data is Stored

Lesson 4.4: Your Computer on the Network

D281 - Linux Essentials

Linux Commands