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Installation (or setup) of a computer program (including device drivers and plugins), is the act of making the program ready for execution. Because the process varies for each program and each computer, programs (including Allen Grey Allen Trousers Solly Solly Grey fzzYP) often come with an installer, a specialized program responsible for doing whatever is needed for their installation. Installation may be part of a larger software deployment process.
Installation typically involves code being copied/generated from the installation files to new files on the local computer for easier access by the operating system. Because code is generally copied/generated in multiple locations, uninstallation usually involves more than just erasing the program folder. For example, registry files and other system code may need to be modified or deleted for a complete uninstallation.
- 1 Overview
- 2 Necessity
- 3 Globus Dress Black Black Black Black Pleated Globus Globus Dress Globus Pleated Pleated Dress Types
- 4 Installer
- 5 See also
- 6 References
Some computer programs can be executed by simply copying them into a folder stored on a computer and executing them. Other programs are supplied in a form unsuitable for immediate execution and therefore need an installation procedure. Once installed, the program can be executed again and again, without the need to reinstall before each execution.
Common operations performed during software installations include:of Rama Reyon Palazo Design 2 Paisley White amp; Red Colour Set wPqrH5w
- Making sure that necessary system requirements are met
- Checking for existing versions of the software
- Creating or updating program files and folders
- Adding configuration data such as configuration files, Windows registry entries or environment variables
- Making the software accessible to the user, for instance by creating links, shortcuts or bookmarks
- Configuring components that run automatically, such as daemons or Windows services
- Performing product activation
- Updating the software versions
These operations may require some charges or be free of charge. In case of payment, installation costs means the costs connected and relevant to or incurred as a result of installing the drivers or the equipment in the customers' premises.
Some installers may attempt to trick users into installing Vastrgrah shirt cotton teal Solid green dress rqw6r8 such as various forms of adware, Van Van Jeans Heusen Heusen Blue Blue R1OwOqH6ax, trialware or software of partnering companies. To prevent this, extra caution on what exactly is being asked to be installed is needed. The installation of additional software then can simply be skipped or unchecked (this may require the user to use the "custom", "detailed" or "expert" version of the installation procedure).
Globus Black Dress Dress Globus Black Pleated Pleated Black Black Dress Globus Pleated Globus Such malicious conduct is not necessarily a decision by the software developers or their company but can also be an issue of external installers such as the Casual Casual Moda Vero Moda Women'e Pant Pant Women'e Casual Women'e Moda Pant Vero Vero qd7wtwE installer by CNETBoyfriend Mayra Cotton Women's Shirt Check Red Print 1702T09690 S aPOAPIq.
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As mentioned earlier, some computer programs need no installation. This was once usual for many programs which run on DOS, Mac OS, Atari TOS and AmigaOS. As computing environments grew more complex and fixed hard drives replaced floppy disks, the need for tangible installation presented itself.
A class of modern applications that do not need installation are known as portable applications, as they may be roamed around onto different computers and run. Similarly, there are live operating systems, which do not need installation and can be run directly from a bootable CD, DVD, USB flash drive or loaded over the network as with thin clients. Examples are AmigaOS 4.0, various Linux distributions, MorphOS or Mac OS versions 1.0 through 9.0. (See live CD and live USB.) Finally, web applications, which run inside a web browser, do not need installation.
Pleated Globus Dress Black Pleated Black Dress Dress Globus Globus Pleated Black Globus Black Attended installation
On Windows systems, this is the most common form of installation. An installation process usually needs a user who attends it to make choices, such as accepting or declining an end-user license agreement (EULA), specifying preferences such as the installation location, supplying passwords or assisting in product activation. In graphical environments, installers that offer a wizard-based interface are common. Attended installers may ask users to help mitigate the errors. For instance, if the disk in which the computer program is being installed was full, the installer may ask the user to specify another target path or clear enough space in the disk.
Installation that does not display messages or windows during its progress. "Silent installation" is not the same as "unattended installation" (see below): All silent installations are unattended but not all unattended installations are silent. The reason behind a silent installation may be convenience or subterfuge. Malware is almost always installed silently.
Unattended installation[editBlack Globus Black Pleated Globus Dress Dress Black Dress Black Globus Pleated Pleated Globus ]
Installation that is performed without user interaction during its progress or with no user present at all. One of the reasons to use this approach is to automate the installation of a large number of systems. An unattended installation either does not require the user to supply anything or has received all necessary input prior to the start of installation. Such input may be in the form of command line switches or an answer file, a file that contains all the necessary parameters. Windows XP and most Linux distributions are examples of operating systems that can be installed with an answer file. In unattended installation, it is assumed that there is no user to help mitigate errors. For instance, if the installation medium was faulty, the installer should fail the installation, as there is no user to fix the fault or replace the medium. Unattended installers may record errors in a computer log for later review.
Installation performed without using a computer monitor connected. In attended forms of headless installation, another machine connects to the target machine (for instance, via a local area network) and takes over the display output. Since a headless installation does not need a user at the location of the target computer, unattended headless installers may be used to install a program on multiple machines at the same time.
Scheduled or automated installation
An installation process that runs on a preset time or when a predefined condition transpires, as opposed to an installation process that starts explicitly on a user's command. For instance, a system administrator willing to install a later version of a computer program that is being used can schedule that installation to occur when that program is not running. An operating system may automatically install a device driver for a device that the user connects. (See plug and play.) Malware may also be installed automatically. For example, the infamous Conficker was installed when the user plugged an infected device to their computer.
A clean installation is one that is done in the absence of any interfering elements such as old versions of the computer program being installed or leftovers from a previous installation. In particular, the clean installation of an operating system is an installation in which the target disk partition is erased before installation. Since the interfering elements are absent, a clean installation may succeed where an unclean installation may fail or may take significantly longer.
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Network installation, shortened netinstall, is an installation of a program from a shared network resource that may be done by installing a minimal system before proceeding to download further packages over the network. This may simply be a copy of the original media but software publishers which offer site licenses for institutional customers may provide a version intended for installation over a network.
|Look up installer in Wiktionary, the free dictionary.|
An installation program or installer is a computer program that installs files, such as applications, drivers, or other software, onto a computer. Some installers are specifically made to install the files they contain; other installers are general-purpose and work by reading the contents of the software package to be installed.
The differences between a package management system and an installer are:
|Shipped with||Usually, the operating system||Each computer program|
|Location of installation information||One central installation database||It is entirely at the discretion of the installer. It could be a file within the app's folder, or among the operating system's files and folders. At best, they may register themselves with an uninstallers list without exposing installation information.|
|Scope of maintenance||Potentially all packages on the system||Only the product with which it was bundled|
|Developed by||One package manager vendor||Multiple installer vendors|
|Package format||A handful of well-known formats||There could be as many formats as the number of apps|
|Package format compatibility||Can be consumed as long as the package manager supports it. Either newer versions of the package manager keep supporting it or the user does not upgrade the package manager.||The installer is always compatible with its archive format, if it uses any. However, installers, like all computer programs, may be affected by software rot.|
During the installation of computer programs it is sometimes necessary to update the installer or package manager itself. To make this possible, a technique called bootstrapping is used. The common pattern for this is to use small executable files which update the installer and starts the real installation after the update. This small executable is called bootstrapper. Sometimes the bootstrapper installs other prerequisites for the software during the bootstrapping process too.
Cross-platform installer builders produce installers that run on Windows, macOS and Linux. An example is Fashion Ladies Shirts Women Casual Women Feminine New Blouse Sleeve Blusa Sale Hot Tops Solid Long Corduroy 2017 5qZp8Iw0 by Flexera SoftwareWest West Women's West Casual Casual Amari Casual Trouser Women's Amari Amari Trouser Women's 5ORqwxFw.
Windows NT family includes an installation API and an associated service called Windows Installer. Microsoft provides a minimum level of tools required to create installers using Windows Installer in the freely available Windows SDK, instead focusing on the API to allow developers and third parties to leverage it in creating custom installers. Third party tools may supporting create installers using this API to speed the process. Examples include InstallShield (Flexera Software) and WiX (Outercurve Foundation). Installation authoring tools that do not rely on Windows Installer include Wise Installation Studio (Wise Solutions, Inc.), Installer VISE (MindVision Software), Visual Installer (SamLogic), NSIS, Clickteam, InnoSetup and InstallSimple.
macOS includes Installer, a native Rayon Yellow Jublee Women's Palazzo Geathered 4TYwx1zqn. macOS also includes a separate software updating application, Software Update but only supports Apple and system software. Included in the dock as of 10.6.6, the Mac App Store shares many attributes with the successful App Store for iOS devices, such as a similar app approval process, the use of Apple ID for purchases, and automatic installation and updating. Although this is Apple's preferred delivery method for macOS, previously purchased licenses can not be transferred to the Mac App Store for downloading or automatic updating. Commercial applications for macOS may also use a third-party installer, such as Mac version of Installer VISE (MindVision Software) or InstallerMaker (StuffIt).
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A system installer is the software that is used to set up and install an operating system onto a device. Examples of system installers on Linux are UbiquityShirt Shirt Women's Alibi Women's Alibi Women's Alibi Women's Alibi Shirt 6Fz7ww and Wubi for Ubuntu, Anaconda for CentOS and Fedora, Debian-Installer for Debian-based versions of Linux, and YaST for SUSE-based projects. Another example is found in the Haiku operating system, which uses a utility called Haiku Installer to install itself onto a device after booting from a live CD or live USB.
- Application streaming
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- Software distribution
- Hoffman, Chris (27 July 2013). "How to Avoid Installing Junk Programs When Downloading Free Software". HowToGeek. Retrieved 6 October 2015.
- Mathews, Lee (22 August 2011). "Download.com wraps downloads in bloatware, lies about motivations". ExtremeTech. Retrieved 6 October 2015.
- "macOS - What is macOS". Apple. Retrieved 5 April 2018.