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2026-04-03 20:07:14 -07:00
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<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Hello Linux</title>
<style>
body {
margin: 0;
padding: 0;
}
.reveal {
height: 100vh;
}
</style>
</head>
<body>
<div class="reveal">
<div class="slides">
<section>
<h1>Hello Linux</h1>
<h3>FLUG Presentation</h3>
<p>April 3, 2026</p>
</section>
<section>
<h2>What is a computer?</h2>
<img
src="computer.png"
alt="A very simple computer: DATA &amp; INSTRUCTION FLOW"
style="max-height: 400px"
/>
</section>
<section>
<h2>
<a
href="https://youtu.be/2bGvWEfLUsc?si=mlzBMg4N_9-oT5Wk&t=5347"
>The kernel</a
>
</h2>
<ul>
<li>Kernel loads data from RAM to CPU</li>
<li>Kernel decides who gets to run on CPU</li>
<li>
Kernel knows how to talk with HDD and other devices
</li>
</ul>
</section>
<section>
<h2>Linux is a kernel</h2>
<p>There are others, including:</p>
<ul>
<li>Windows NT (Windows)</li>
<li>XNU (macOS / iOS)</li>
<li>BSD (FreeBSD, OpenBSD, NetBSD)</li>
</ul>
</section>
<section>
<h2>Linus Torvalds</h2>
<img
src="linus.jpg"
alt="Linus Torvalds"
style="max-height: 400px"
/>
</section>
<section>
<h2>Kernel vs userspace</h2>
<ul>
<li class="fragment">
<strong>Kernel Space</strong>
<ul>
<li>Core operating system</li>
<li>
Unrestricted access to hardware and memory
</li>
<li>Runs in privileged mode</li>
</ul>
</li>
<li class="fragment">
<strong>User Space</strong>
<ul>
<li>
Where user applications run (e.g., your
browser)
</li>
<li>
Restricted access (must ask kernel for
resources)
</li>
<li>
Communicates with kernel via
<em>System Calls</em>
</li>
</ul>
</li>
</ul>
</section>
<section>
<h2>Userspace -- GNU</h2>
<ul>
<li class="fragment">
<strong>G</strong>NU's <strong>N</strong>ot
<strong>U</strong>nix!
</li>
<li class="fragment">
Started in 1983 by Richard Stallman to create a free
operating system
</li>
<li class="fragment">
Provides core user utilities (Coreutils) like
<code>ls</code>, <code>cp</code>, and
<code>rm</code>
</li>
<li class="fragment">
Provides the standard shell (Bash) and compiler
(GCC)
</li>
<li class="fragment">
Provides the C Library (glibc) which acts as the
bridge between user space and the kernel
</li>
<li class="fragment">
This is why the complete OS is often referred to as
<strong>GNU/Linux</strong>!
</li>
</ul>
</section>
<section>
<h2>Richard Stallman</h2>
<img
src="stallman.jpg"
alt="Richard Stallman"
style="max-height: 400px"
/>
</section>
<section>
<h2>Free Software vs Open Source</h2>
<ul>
<li class="fragment">
<strong>Free Software (Stallman/FSF)</strong>
<p>
Focuses on ethics and user freedom. "Free as in
speech, not free as in beer."
</p>
</li>
<li class="fragment">
<strong>The Four Freedoms:</strong>
<ul>
<li>0. Run the program for any purpose.</li>
<li>1. Study and change the source code.</li>
<li>2. Redistribute exact copies.</li>
<li>3. Distribute modified versions.</li>
</ul>
</li>
</ul>
</section>
<section>
<h2>Free Software vs Open Source</h2>
<ul>
<li class="fragment">
<strong>Open Source</strong>
<p>
Focuses on practical benefits (building better
software through collaboration).
</p>
</li>
</ul>
</section>
<section>
<h2>OK; so you have GNU/Linux</h2>
<img
src="ubuntu-tty.png"
alt="Ubuntu TTY"
style="max-height: 400px"
/>
</section>
<section>
<h2>Display Servers: Xorg & Wayland</h2>
<ul>
<li class="fragment">
<strong>Xorg (X11):</strong> The traditional display
server. Extremely compatible, but burdened by
decades of legacy code.
</li>
<li class="fragment">
<strong>Wayland:</strong> The modern replacement
protocol. Designed to be simpler, more secure, and
tear-free. Now the default on most modern distros.
</li>
</ul>
</section>
<section>
<h2>Desktop Environments</h2>
<p>
Often what users interact with directly. They provide
the graphical interface, window management, panels, and
bundled applications.
</p>
</section>
<section>
<h2>GNOME</h2>
<img
src="gnome.png"
alt="GNOME Desktop"
style="max-height: 400px"
/>
</section>
<section>
<h2>KDE Plasma</h2>
<img
src="kde.jpg"
alt="KDE Plasma Desktop"
style="max-height: 400px"
/>
</section>
<section>
<h2>More software</h2>
<p>
You need more than just a pretty desktop; you need
usefull applications!
</p>
<ul>
<li>
Most browsers (Chrome, Firefox, Safari) work in
Linux
</li>
<li>
There are many open-source Linux-native tools, like
LibreOffice
</li>
<li>
... and we can run Windows applications using WINE
</li>
</ul>
</section>
<section>
<h2>Package Managers</h2>
<ul>
<li class="fragment">
Like an App Store, but built for the command line
(and much older).
</li>
<li class="fragment">
Automates installing, upgrading, configuring, and
removing software.
</li>
<li class="fragment">
Resolves dependencies (if App A needs App B, it
installs B automatically).
</li>
<li class="fragment">
Examples: <code>apt</code> (Debian/Ubuntu),
<code>pacman</code> (Arch),
<code>dnf</code> (Fedora).
</li>
</ul>
</section>
<section>
<h2>Linux distributions</h2>
<p>
So many choices! Distros make some of these decisions
for you. They bundle a package manager, display manager,
configuration files, etc for you.
</p>
<ul>
<li>Debian-based (Ubuntu)</li>
<li>Arch-based (Arch, Manjaro, CachyOS)</li>
<li>Redhat (Fedora, RHEL)</li>
<li>Gentoo (no.)</li>
</ul>
</section>
<section>
<h2>Try things out</h2>
<p>
You run Linux on your computer without installing it.
Try out a few different window managers and
distributions.
</p>
<p>Today, I recommend trying CachyOS</p>
<ul>
<li>It feels snappy</li>
<li>Has lots of desktop environments</li>
<li>One of the best package managers</li>
</ul>
</section>
<section>
<h2>CachyOS - KDE Plasma</h2>
<img
src="cachy-kde.png"
alt="CachyOS KDE Plasma"
style="max-height: 400px"
/>
</section>
<section>
<h2>CachyOS - i3</h2>
<img
src="cachy-i3.png"
alt="CachyOS i3"
style="max-height: 400px"
/>
</section>
<section>
<h2>CachyOS - Niri</h2>
<img
src="cachy-niri.jpg"
alt="CachyOS Niri"
style="max-height: 400px"
/>
</section>
<section>
<h2>CachyOS - Qtile</h2>
<img
src="cachy-qtile.png"
alt="CachyOS Qtile"
style="max-height: 400px"
/>
</section>
<section>
<h2>CachyOS - Wayfire</h2>
<img
src="cachy-wayfire.png"
alt="CachyOS Wayfire"
style="max-height: 400px"
/>
</section>
<section>
<h2>But.. why?</h2>
<img
src="linux-potatoe.png"
alt="Linux potatoe"
style="max-height: 400px"
/>
</section>
<section>
<h2>But.. why?</h2>
<img
src="linux-bootloader.jpg"
alt="Linux bootloader"
style="max-height: 400px"
/>
</section>
<section>
<h2>But.. why?</h2>
<img
src="penguin.jpg"
alt="Linux penguin"
style="max-height: 400px"
/>
</section>
<section>
<h2>Thank You</h2>
<p>Questions?</p>
</section>
</div>
</div>
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<script type="module">
import Reveal from "reveal.js";
import RevealMarkdown from "reveal.js/plugin/markdown";
import RevealHighlight from "reveal.js/plugin/highlight";
import RevealNotes from "reveal.js/plugin/notes";
import "reveal.js/reveal.css";
import "reveal.js/theme/black.css";
import "reveal.js/plugin/highlight/monokai.css";
Reveal.initialize({
hash: true,
slideNumber: true,
transition: "slide", // none/fade/slide/convex/concave/zoom
plugins: [RevealMarkdown, RevealHighlight, RevealNotes],
});
</script>
</body>
</html>

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