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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.

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Questions related to Dell hardware and troubleshooting Ubuntu
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one of the main access points for applications in Ubuntu. It provides quick access for launching applications and managing running applications.
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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.
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Questions regarding the MySQL database server, client and tools.
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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 …
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Questions related to the sudo command that allows users to run programs with the privileges of a different user (normally the root user).
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Questions related to PulseAudio, the default sound server in Ubuntu, which manages all audio devices like internal and external sound cards (and therefore all speakers, microphones, headsets, etc.) th…
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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.
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Questions dealing with Ubuntu's layout of files, permissions, and files that reside in special locations on disk.
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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…
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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.
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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…
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a Qt-based desktop environment as well as a suite of cross-platform desktop applications. Its latest desktop environment is KDE Plasma 5.
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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.
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the standard Windows interoperability suite of programs for Ubuntu and is also the default file server for Ubuntu.
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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 …
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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.
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a compositing window manager that uses 3D graphics hardware to enhance the usability and aesthetics of the desktop environment.
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Security covers a wide-ranging set of topics including Users, Permissions, Authentication, Authorisation, Upgrades, Firewalling, Hardening, etc.
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Questions about encryption such as home folder encryption, partition encryption and file encryption.
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Questions about uninstalling software in Ubuntu, or uninstalling Ubuntu from a computer.
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Questions about the 64-bit architecture, and how to get software (including 32-bit applications) working on it.
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Questions related to power management, particularly power saving measures.
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Questions about "themes" which alter the look of the interface.
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Questions related to compiling software from sources, usually using the "make" command.
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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.
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Writing applications for Ubuntu (including Ubuntu Touch) and questions about the application submission process to the Ubuntu Software Center. This covers both open source and commercial applications.
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For questions regarding shutting down and powering off.
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Questions about laptops in relationship to Ubuntu. Common subjects are trackpads, batteries and wireless cards.
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Questions about games and gaming on Ubuntu. Most other gaming-related questions can be asked on the Gaming StackExchange site -
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GNOME Terminal (often titled only "Terminal") is the default terminal emulator included in Ubuntu.
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a free and open-source cross-platform productivity suite. It includes a word processor (Writer), spreadsheet creator (Calc), presentation editor (Impress), database manager (Base), diag…
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An operating system from the Windows NT family of operating systems from Microsoft, released in 2012 and the successor of Windows 7. Introduced UEFI as a replacement for legacy firmware/BIOS and requi…
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This non-LTS (long term support) release of Ubuntu, code-named Wily Werewolf. It is now EOL. Newer questions should be considered off-topic.
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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.
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Questions about keyboard layout and configuration.