|
Redshift (software)
Redshift is an application that adjusts the computer display's color temperature based upon the time of day. The program is free software and is intended to reduce eye strain, as well as insomniaGithub release 1.9 (see and ). Redshift transitions the computer display's color temperature evenly between daylight, daytime and night temperatures to allow the user's eyes to slowly adapt. At night, the color temperature is low, typically 3000–4000 K and preferably matching the room's lighting temperature. Typical color temperature during the daytime is 5500–6500 K. Features Redshift is primarily distributed for and used on the Linux operating system. Redshift can be used to set a single color temperature and brightness ("one-shot mode") or can adjust the temperature and brightness continuou ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ubuntu
Ubuntu ( ) is a Linux distribution based on Debian and composed primarily of free and open-source software. Developed by the British company Canonical (company), Canonical and a community of contributors under a Meritocracy, meritocratic governance model, Ubuntu is released in multiple official editions: ''Desktop computer, Desktop'', ''Server (computing), Server'', and ''Core'' for Internet of things, IoT and robotic devices. Ubuntu is published on a six-month release cycle, with long-term support (LTS) versions issued every two years. Canonical provides security updates and support until each release reaches its designated end-of-life (product), end-of-life (EOL), with optional extended support available through the Ubuntu Pro and Expanded Security Maintenance (ESM) services. , the latest stable release is Ubuntu version history#Ubuntu 25.04 (Plucky Puffin), 25.04 ("Plucky Puffin"), and the current LTS release is Ubuntu version history#Ubuntu 24.04 LTS (Noble Numbat), 24.04 ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Twilight
Twilight is daylight illumination produced by diffuse sky radiation when the Sun is below the horizon as sunlight from the upper atmosphere is scattered in a way that illuminates both the Earth's lower atmosphere and also the Earth's surface. Twilight also may be any period when this illumination occurs, including dawn and dusk. The lower the Sun is beneath the horizon, the dimmer the sky (other factors such as atmospheric conditions being equal). When the Sun reaches 18° below the horizon, the illumination emanating from the sky is nearly zero, and evening twilight becomes nighttime. When the Sun approaches re-emergence, reaching 18° below the horizon, nighttime becomes morning twilight. Owing to its distinctive quality, primarily the absence of shadows and the appearance of objects silhouetted against the lit sky, twilight has long been popular with photographers and painters, who often refer to it as the blue hour, after the French expression . By analogy with eve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linux Mint
Linux Mint is a community-developed Linux distribution. It is based on Ubuntu and designed for x86-64 based computers; another variant is based on Debian which is named Linux Mint Debian Edition (LMDE) and has both 64-bit and IA-32 support. The Linux Mint project started in 2006 and it has since become one of the most popular Linux operating systems for desktop PCs. Linux Mint comes bundled with a variety of free and open-source applications. It has its own desktop environment, called Cinnamon, although it also offers Xfce and MATE as alternatives by default. The latest release is Linux Mint 22.1 "Xia", released on January 16, 2025; as a long-term support (LTS) release, it will be supported until 2029. History 2006–2013 Linux Mint began in 2006 with a beta release, 1.0, code-named 'Ada', based on Kubuntu and using its KDE interface. Linux Mint 2.0 'Barbara' was the first version to use Ubuntu as its codebase and its GNOME interface. It had few users until th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ubuntu MATE
Ubuntu MATE is a Free and open-source software, free and open-source Linux distribution and an official derivative work, derivative of Ubuntu. Its main differentiation from Ubuntu is that it uses the MATE (software), MATE desktop environment as its default user interface (based on GNOME 2), instead of the GNOME 3 desktop environment that is the default user interface for Ubuntu. History The Ubuntu MATE project was founded by Martin Wimpress and Alan Pope and began as an unofficial derivative of Ubuntu, using an Ubuntu 14.10 base for its first release; a 14.04 LTS release followed shortly. As of February 2015, Ubuntu MATE gained the official Ubuntu flavour status from Canonical (company), Canonical as per the release of 15.04 Beta 1. In addition to IA-32 and x86-64 which were the initial supported platforms, Ubuntu MATE also supports PowerPC and ARMv7 (on the Raspberry Pi 2 and 3 as well as the ODROID XU4). In April 2015, Ubuntu MATE announced a partnership with British computer re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
XFlux
f.lux (pronounced "flux") is a cross-platform computer program that adjusts a display's color temperature according to location and time of day, offering functional respite for the eyes. The program is designed to reduce eye strain during night-time use, helping to reduce disruption of sleep patterns. Functionality On installation, the user can choose a location based on geographic coordinates, a ZIP code, or the name of a location. The program then automatically calibrates the device display's color temperature to account for time of day, based on sunrise and sunset at the chosen location. At sunset, it will gradually change the color temperature to a warmer color and restore the original color at sunrise. f.lux offers a variety of color profiles and pre-defined temperature values, modifying program behaviour for specific programs or activities; including a mode for film watching, decreasing red tinge (for 2.5 hours), and a darkroom mode that does not affect night-adapted ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Debian
Debian () is a free and open-source software, free and open source Linux distribution, developed by the Debian Project, which was established by Ian Murdock in August 1993. Debian is one of the oldest operating systems based on the Linux kernel, and is the basis of List of Linux distributions#Debian-based, many other Linux distributions. As of September 2023, Debian is the second-oldest Linux distribution still in active development: only Slackware is older. The project is coordinated over the Internet by a team of volunteers guided by the List of Debian project leaders, Debian Project Leader and three foundational documents: the Debian Social Contract, the Debian Constitution, and the Debian Free Software Guidelines. In general, Debian has been developed openly and distributed freely according to some of the principles of the GNU Project and Free Software. Because of this, the Free Software Foundation sponsored the project from November 1994 to November 1995. However, Debian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chmod
is a shell command for changing access permissions and special mode flags of files (including special files such as directories). The name is short for ''change mode'' where ''mode'' refers to the permissions and flags collectively. The command originated in AT&T Unix version 1 and was exclusive to Unix and Unix-like operating systems until it was ported to other operating systems such as Windows (in UnxUtils) and IBM i. In Unix and Unix-like operating systems, a system call with the same name as the command, , provides access to the underlying access control data. The command exposes the capabilities of the system call to a shell user. As the need for enhanced file-system permissions grew, access-control lists were added to many file systems to augment the modes controlled via . The implementation of bundled in GNU coreutils was written by David MacKenzie and Jim Meyering. Use Although the syntax of the command varies somewhat by implementation, it generally acc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graphical User Interface
A graphical user interface, or GUI, is a form of user interface that allows user (computing), users to human–computer interaction, interact with electronic devices through Graphics, graphical icon (computing), icons and visual indicators such as secondary notation. In many applications, GUIs are used instead of text-based user interface, text-based UIs, which are based on typed command labels or text navigation. GUIs were introduced in reaction to the perceived steep learning curve of command-line interfaces (CLIs), which require commands to be typed on a computer keyboard. The actions in a GUI are usually performed through direct manipulation interface, direct manipulation of the graphical elements. Beyond computers, GUIs are used in many handheld mobile devices such as MP3 players, portable media players, gaming devices, smartphones and smaller household, office and Distributed control system, industrial controls. The term ''GUI'' tends not to be applied to other lower-displa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Command-line Interface
A command-line interface (CLI) is a means of interacting with software via command (computing), commands each formatted as a line of text. Command-line interfaces emerged in the mid-1960s, on computer terminals, as an interactive and more user-friendly alternative to the non-interactive mode available with punched cards. For a long time, a CLI was the most common interface for software, but today a graphical user interface (GUI) is more common. Nonetheless, many programs such as operating system and software development utility software, utilities still provide CLI. A CLI enables automation, automating computer program, programs since commands can be stored in a scripting language, script computer file, file that can be used repeatedly. A script allows its contained commands to be executed as group; as a program; as a command. A CLI is made possible by command-line interpreters or command-line processors, which are programs that execute input commands. Alternatives to a CLI ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gamma Correction
Gamma correction or gamma is a Nonlinearity, nonlinear operation used to encode and decode Relative luminance, luminance or CIE 1931 color space#Tristimulus values, tristimulus values in video or still image systems. Gamma correction is, in the simplest cases, defined by the following Power law, power-law expression: : V_\text = A V_\text^\gamma, where the non-negative real input value V_\text is raised to the power \gamma and multiplied by the constant ''A'' to get the output value V_\text. In the common case of , inputs and outputs are typically in the range 0–1. A gamma value \gamma 1 is called a ''decoding gamma'', and the application of the expansive power-law nonlinearity is called gamma expansion. Explanation Gamma encoding of images is used to optimize the usage of bits when encoding an image, or bandwidth used to transport an image, by taking advantage of the non-linear manner in which humans perceive light and color. The human perception of brightness (lightness), un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Direct Rendering Manager
The Direct Rendering Manager (DRM) is a subsystem of the Linux kernel responsible for interfacing with Graphics processing unit, GPUs of modern video cards. DRM exposes an Application programming interface, API that user-space programs can use to send commands and data to the GPU and perform operations such as configuring the mode setting of the display. DRM was first developed as the kernel-space component of the X.Org Server, X Server Direct Rendering Infrastructure, but since then it has been used by other graphic stack alternatives such as Wayland (display server protocol), Wayland and standalone applications and libraries such as Simple DirectMedia Layer , SDL2 and Kodi (software) , Kodi. User-space programs can use the DRM API to command the GPU to do hardware acceleration, hardware-accelerated 3D rendering and video decoding, as well as General-purpose computing on graphics processing units, GPGPU computing. Overview The Linux kernel already had an Application program ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
