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An '''uninstaller''', also called a '''deinstaller''', is a variety of [[utility software]] designed to remove other software or parts of it from a computer. It is the opposite of an [[installer]]. Uninstallers are useful primarily when software components are installed In multiple directories, or where some software components might be shared between the system being uninstalled and other systems that remain in use.
An '''uninstaller''', also called a '''deinstaller''', is a variety of [[utility software]] designed to remove other software or parts of it from a computer. It is the opposite of an [[installer]]. Uninstallers are useful primarily when software components are installed In multiple directories, or where some software components might be shared between the system being uninstalled and other systems that remain in use.


Generic uninstallers flourished in the 1990s due to the popularity of shared libraries and the constraints of then-current operating systems, especially Microsoft Windows XP. Declining storage costs and increasing capacity subsequently made reclaiming disk space less urgent, while end-user applications have increasingly relied on simpler installation architectures that consolidate all components to
Generic uninstallers flourished in the 1990s due to the popularity of shared libraries and the constraints of then-current operating systems, especially Microsoft Windows XP. Declining storage costs and increasing capacity subsequently made reclaiming disk space less urgent, while end-user applications have increasingly relied on simpler installation architectures that consolidate all components to facilitate removal.


==Components==
==Components==

Revision as of 23:17, 2 February 2018

Berkeley Open Infrastructure for Network Computing uninstaller icon.

An uninstaller, also called a deinstaller, is a variety of utility software designed to remove other software or parts of it from a computer. It is the opposite of an installer. Uninstallers are useful primarily when software components are installed In multiple directories, or where some software components might be shared between the system being uninstalled and other systems that remain in use.

Generic uninstallers flourished in the 1990s due to the popularity of shared libraries and the constraints of then-current operating systems, especially Microsoft Windows XP. Declining storage costs and increasing capacity subsequently made reclaiming disk space less urgent, while end-user applications have increasingly relied on simpler installation architectures that consolidate all components to facilitate removal.

Components

Typical uninstallers contain the following components:[1]

  • Logger: The Logger is used to log installations (e.g., log which files were added or changed, which registry entries were added or changed, etc. at the time of installation). This log is used when the user decides to uninstall the logged installation at later date (in that case, the log is "reversed" — i.e., the log is read, but opposite actions are taken in reverse order).
  • Uninstaller: The Uninstaller is used to reverse changes in the log. This way, the applications can be uninstalled because all changes that were made at the times of installation are reversed.
  • Analyzer (optional): The Analyzer is used to uninstall programs of which installation is not logged. In that case, the program analyzes the program and finds (and deletes, if the user decided to uninstall the program) all related components.
  • Watcher (optional): The Watcher watches running programs for installation programs (and usually offers to start the logger when such programs are detected). Usually, this works by watching the tasklist for any names that are commonly used by installation programs (e.g., SETUP.EXE, INSTALL.EXE, etc.)
  • Other tools (optional): Some uninstallers may also contain other related tools for clearing caches or removing unwanted files.

History

Uninstall was invented by Jack Bicer.[2][3][4][5][6][7] While he was working on Norton Desktop for Windows at Symantec, Bicer came up with the Uninstall concept and developed the first Uninstall program in 1991.[8] When published on March 23, 1992, NORTON DESKTOP FOR WINDOWS V.20 (see the official - README.TXT[9]) was the first software package ever to include an Uninstaller, shown under the "UNINSTALLING NORTON DESKTOP" section.

After the release of Norton Desktop for Windows 2.0, Ken Spreitzer, who was a tester for the product at Symantec, capitalized on the uninstall idea and wrote the first widely used PC program called "UnInstaller", initially licensed to MicroHelp and then by February 1998 sold by CyberMedia. Microhelp published Spreitzer's program as Uninstaller version 1. In 1995, Spreitzer told The New York Times that the royalties he received from Microhelp for Uninstaller made him a millionaire by age 30. Tim O'Pry, while president of Microhelp, substantially rewrote the code for Uninstaller version 2, which became a best-selling program.[10]

See also

References

  1. ^ "Uninstalling Software". SmartComputing. Vol. 5, no. 8. August 1999.
  2. ^ History of Uninstall: http://uninstall.biz/
  3. ^ Redlands Daily Facts: http://www.redlandsdailyfacts.com/business/20100719/web-ads-seek-support-for-company
  4. ^ Reduce Cart Abandonment with QR Codes: http://www.websitemagazine.com/content/blogs/posts/archive/2013/10/21/reduce-cart-abandonment-with-qr-codes.aspx
  5. ^ How Sekur.me Wants To Use Cell Phones To Fix Abandoned Shopping Carts: http://www.socaltech.com/how_sekur_me_wants_to_use_cell_phones_to_fix_abandoned_shopping_carts/s-0052193.html
  6. ^ Secure and Easy Mobile Payments on Your Online Store: http://www.eyemaginetech.com/blog/apps-extensions/secure-and-easy-mobile-payments-on-your-online-store
  7. ^ Norman, Jan (January 12, 2009). "Can firms start with low cost and instant customers?". The Orange County Register. Retrieved November 24, 2015.
  8. ^ History of Uninstall: http://uninstall.biz/.
  9. ^ NORTON DESKTOP FOR WINDOWS version 2.0 README.TXT, March 23, 1992. http://www.uninstall.biz/README.TXT
  10. ^ Lohr, Steve (March 27, 1995). "Information Technology; Minds Behind the Product". The New York Times. Retrieved August 7, 2015.
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