Understanding Linux — a simple glossary
Short, plain-language explanations of terms you'll see when choosing a distro. Each distro is rated on four things: ease of setup, stability, ease of use, and documentation — see the Ratings section below.
Ratings
Ease of setup and ease of use use Easy, Medium, or Advanced. Stability uses Stable, Moderate, or Unstable. Documentation uses Excellent, Good, or Limited. Use these to compare at a glance.
Ease of setup
How straightforward it is to install and get the distro running. "Easy" means a smooth installer and minimal steps; "Advanced" may require more technical choices or manual steps.
Stability
How reliable and predictable the system is in daily use. "Stable" means few surprises and safe updates; "Unstable" can mean cutting-edge software with a higher chance of occasional issues; "Moderate" sits in between.
Ease of use
How user-friendly the distro is once it's installed. "Easy" means a familiar, polished experience; "Advanced" usually means more control but more to learn.
Documentation
Whether the distro is well documented and whether that documentation is easy to understand. "Excellent" means plentiful, clear docs aimed at ordinary users; "Limited" can mean sparse or very technical documentation; "Good" sits in between.
Choosing a distro
Who the distro is for and who maintains it — useful when comparing options.
Backed by
Who develops or sponsors the distro — a company (corporation), a non-profit, or a community. It can affect funding, priorities, and how long the project is likely to be maintained.
Best for
The kinds of users the distro is aimed at (e.g. beginners, people switching from Windows, gamers, developers). Picking one that matches you often means less friction.
Core concepts
The main parts of the system you interact with: what you see, how you get software, and how you install the distro.
Desktop environment
The part of the system you see and click: windows, taskbar, menus, and icons. Different distros ship different "desktops" (e.g. GNOME, KDE, Cinnamon). Some feel more like Windows, others more minimal or Mac-like. You can often install another desktop later if you want.
Package manager
The tool the distro uses to install, update, and remove software. You'll see names like apt, dnf, or pacman. You don't need to learn the commands right away — most distros have a graphical "app store" or software centre that uses the package manager behind the scenes.
Installer
The program that puts Linux on your computer. Most distros offer a graphical installer: you choose language, disk (or "install alongside Windows"), and user account, then wait for it to finish. You can usually try the system from a "live" USB first without installing.
Releases and updates
How the distro is released and how long you get updates — fixed releases, rolling releases, LTS, and immutable distros.
LTS (long-term support)
A release that gets security updates and fixes for several years (often 5). Good if you want to install once and not worry about upgrading the whole system soon. Non-LTS releases usually get updates for a shorter time (e.g. 9–13 months) but offer newer software.
Rolling release
Instead of big version upgrades (e.g. 22.04 → 24.04), you get small, ongoing updates. The system is always "current" but updates are more frequent. Fixed releases (non-rolling) give you a known baseline and bigger upgrades every 6–24 months.
Updates and support
How the distro gets new versions and how long it's supported. See LTS and rolling release for the main models. "Support period" is how long you get security updates.
Immutable distro
An immutable (or atomic) distro keeps the core system read-only. You get updates as a single, reversible image: if something goes wrong, you can roll back to the previous state. User files and installed apps (via Flatpak, containers, or a dedicated overlay) live outside the read-only system, so you still customize your experience. Good for stability and predictable updates, with a different workflow than traditional "install anything anywhere" distros.
GPU support and drivers
Which graphics hardware (Intel, AMD, NVIDIA) the distro supports and whether drivers are pre-installed or need manual setup. Intel and AMD integrated/discrete GPUs usually work with open-source drivers that are included in the kernel. NVIDIA often needs a separate driver: some distros offer it in the installer or a "Additional Drivers" tool; others require a manual install.