If you're exploring Linux or helping someone else get started, you've likely heard names like Ubuntu, Fedora, Debian, or Red Hat thrown around. These are Linux distributions—and within each one, you'll find multiple versions. Understanding what these are and how they differ will help you choose one that fits your needs.
Linux itself is just the core component (called the kernel) that manages your computer's hardware and lets programs run. A Linux distribution is a complete package that bundles the kernel with other software—a package manager, a desktop environment (if you want a graphical interface), utilities, and pre-installed applications.
Different distributions package these components differently, which is why Ubuntu looks and feels different from Fedora, even though both use the Linux kernel under the hood.
Each distribution releases new versions on a schedule. A version number typically reflects when the release came out and what changes it includes. For example:
Versions matter because each one includes bug fixes, security updates, new features, and software updates. An older version may lack modern tools or security patches.
Linux distributions use two main approaches to versioning:
Fixed-release distributions publish new versions on a set schedule—sometimes annually, sometimes every few years. Ubuntu releases a new version every six months (with a longer-term support version every two years). Fedora releases new versions roughly every six months. Debian releases less frequently but with extended support periods.
Rolling-release distributions continuously update. There's no "new version" to download—you just keep getting the latest software. Arch Linux and Fedora Rawhide work this way. You're always on the cutting edge, but stability can vary.
This distinction is important for stability and planning:
| LTS Versions | Regular Versions |
|---|---|
| Receive updates for 3–10 years (varies by distro) | Supported for 6–12 months typically |
| More conservative with changes | Newer software, more frequent updates |
| Better for servers and systems you don't want to upgrade often | Better for desktops where you want newer features |
| Includes only critical security fixes after a certain point | Includes both features and fixes throughout support period |
Different distributions share common roots. Understanding the family can help you predict how things work:
Debian-based (Debian, Ubuntu, Linux Mint) use the apt package manager and prioritize stability.
Red Hat-based (Fedora, CentOS, Red Hat Enterprise Linux) use dnf or yum package managers and often lead on new features.
Arch-based (Arch Linux, Manjaro) use pacman and emphasize user control and minimalism.
Slackware-based and others exist but are less common for beginners.
The right version depends on your situation:
Older versions eventually reach end of life (EOL)—the date when the distributor stops releasing updates. After that point, security vulnerabilities won't be patched, which is a real risk if you're connected to the internet.
Check your distribution's support timeline before installing. Most make this information public.
Linux distributions and their versions all use the same core kernel, but they package and update things differently. Whether you need stability or cutting-edge software, prefer frequent updates or long stretches between them, there's a distribution and version strategy that fits. Your choice should reflect how you'll use the system and how much maintenance you're willing to do.
