A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

An operating system from the Windows NT family of operating systems from Microsoft, released in 2009 and the successor of Windows Vista.
For questions concerning specifics about the files on Ubuntu. If your question is about the file manager called "Files" in Ubuntu, use the [nautilus] tag instead.
Questions related to live (bootable) USB devices, which allow you to test Ubuntu without installing, to install Ubuntu, or carry out tasks that can't be done from the mounted root filesystem, such as …
Questions related to the sudo command that allows users to run programs with the privileges of a different user (normally the root user).
a Qt-based desktop environment as well as a suite of cross-platform desktop applications. Its latest desktop environment is KDE Plasma 5.
Questions dealing with Ubuntu's layout of files, permissions, and files that reside in special locations on disk.
one of the main access points for applications in Unity interface. It provides quick access for launching applications and managing running applications. If your question is about crea…
In Ubuntu most applications have dependencies, programs that they depend on to run correctly. This means that installing a package sometimes requires other packages to be installed, and removing packa…
a server-side scripting language, used for building browser-based applications. This includes websites as well as programs that don't really need any form of interaction with the user.
used to check user identity or authenticate, for example log in to a user account, to gain elevated privileges with `sudo` or with encryption. Use this tag when asking about using and m…
Questions related to graphics chips and related drivers made by AMD. Also for questions about older ATI motherboard chipsets and drivers.
2259 questions
Ubuntu 17.10 (Artful Aardvark) was released on 19 October 2017, and was supported until July 19, 2018. Questions about unsupported versions are likely to be closed as off-topic.
2251 questions
the standard Windows interoperability suite of programs for Ubuntu and is also the default file server for Ubuntu.
The images that a desktop environment uses to identify files, folders, and applications. Icons are a core component of a GUI and are a fundamental part of navigating any computer today.
Questions related to power management, particularly power saving measures.
Questions about "themes" which alter the look of the interface.
the activity of copying files or databases so that they will be preserved in case of equipment failure or other catastrophe. This tag covers restoring from backup as well.
This non-LTS of Ubuntu, code-named "Vivid Vervet", was released on April 23rd, 2015 and reached End-of-Life on February 4, 2016. Newer questions should be considered off-topic.
2128 questions
Questions about encryption such as home folder encryption, partition encryption and file encryption.
Questions related to compiling software from sources, usually using the "make" command.
Security covers a wide-ranging set of topics including Users, Permissions, Authentication, Authorisation, Upgrades, Firewalling, Hardening, etc.
Questions about uninstalling software in Ubuntu, or uninstalling Ubuntu from a computer.
GNOME Terminal (often titled only "Terminal") is the default terminal emulator included in Ubuntu.
For questions regarding shutting down and powering off.
2004 questions
Questions about laptops in relationship to Ubuntu. Common subjects are trackpads, batteries and wireless cards.
Lenovo make a large group of PC related products including desktops and more portable items such as Thinkpads and Ideapads as well as servers and display items.
the third Long Term Support (LTS) release of Ubuntu. Released April 2010, and no longer supported since May 2013 on Desktops and April 2015 on Servers. Questions about …
1937 questions
Questions about the 64-bit architecture, and how to get software (including 32-bit applications) working on it.
an LTS version released on 23rd April 2020. Will go End Of Life (EOL) April 2025. Only use this tag if your question is version-specific. Don't use this to …
1924 questions
Questions about LibreOffice and the included applications (Writer, Calc, Impress, Base, Draw, Math). Unless the question is a general how-to, user should always tell which version of LibreOffice in us…
a compositing window manager that uses 3D graphics hardware to enhance the usability and aesthetics of the desktop environment.
1908 questions
Questions about keyboard layout and configuration.
Domain Name System for computers, services, or any resource connected to the Internet. It translates domain names meaningful to humans into the numerical identifiers associated with networking equipme…
The Advanced Linux Sound Architecture (ALSA) provides audio and MIDI functionality to the Linux operating system.
a data storage device that uses solid-state storage to store persistent data with the intention of providing access in the same manner of a traditional mechanical spinning…
Codenamed "Maverick Meerkat", this version was released on Oct 10, 2010 and is no longer supported since Apr 10, 2012. Questions about unsupported versions are likely to be closed as off-topic.
1869 questions
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