FACTOID # 2: Puerto Rico has roughly the same gross state product as Montana, Wyoming and North Dakota combined.
 
 Home   Encyclopedia   Statistics   States A-Z   Flags   Maps   FAQ   About 
   
 
WHAT'S NEW
 

SEARCH ALL

FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:

 

 

(* = Graphable)

 

 


Encyclopedia > Computer file management

The term computer file management refers to the manipulation of documents and data in files on a computer. Specifically, one may create a new file or edit an existing file and save it; open or load a pre-existing file into memory; or close a file without saving it. Additionally, one may group related files in directories or folders. These tasks are accomplished in different ways in different operating systems and depend on the user interface design and, to some extent, the storage medium being used. For the similarly-named Surrealist journal, see Documents (journal). ... For other uses, see Data (disambiguation). ... A computer file is a collection of information that is stored in a computer system and can be identified by its full path name. ... This article is about the machine. ... // An operating system (OS) is the software that manages the sharing of the resources of a computer. ... The user interface is the part of a system exposed to users. ... This article does not cite any references or sources. ...


Paradigms of file management

Although the file management paradigm described above is currently the dominant one in computing, attempts have been made to create more efficient or usable paradigms. The concept of saving a file, in particular, has been the subject of much innovation, with some applications including an autosave feature (to periodically save changes to a file in case of a computer crash, power outage, etc.) and others doing away with the save concept completely. In the latter case, one typically opens and closes files without ever being given the option to save them. Such applications usually have a multi-level undo feature to replace the concept of closing a file without saving any changes. For other uses, see Paradigm (disambiguation). ... RAM (Random Access Memory) Look up computing in Wiktionary, the free dictionary. ... Usability is a term used to denote the ease with which people can employ a particular tool or other human-made object in order to achieve a particular goal. ... Application has the following meanings: In general, an application is using something general to some more conrete. ... Autosave is a function in many computer applications or programs which saves an opened document automatically, helping to reduce the risk or impact of data loss in case of a crash or freeze. ... A crash in computing is a condition where a program (either an application or part of the operating system) stops performing its expected function and also stops responding to other parts of the system. ... Power Outage is an episode of The WB drama series, Charmed. ...


Concept of the hierarchy of files

Files can also be managed based on their location on a storage device. They are stored in a storage medium in binary form. Physically, the data is placed in a not-so-well organized structure, due to fragmentation. However, the grouping of files into directories (for operating systems such as DOS, Unix, Linux) or folders (for the Mac OS and Windows) are done by changing an index of file information known as the File Allocation Table (NTFS for recent versions of Windows) or Master File Table (depending on operating system used). In this index, the physical location of a particular file on the storage medium is stored, as well as its position in the hierarchy of directories (as we see it using commands such as DIR, LS and programs such as Explorer, Finder). The terms storage (U.K.) or memory (U.S.) refer to the parts of a digital computer that retain physical state (data) for some interval of time, possibly even after electrical power to the computer is turned off. ... A Hexdump of a JPEG image. ... In computer storage, there are three related uses of the term fragmentation: external fragmentation, internal fragmentation, and data fragmentation, all related to storage. ... Instructions on how to use the directory command. ... Filiation of Unix and Unix-like systems Unix (officially trademarked as UNIX®) is a computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs including Ken Thompson, Dennis Ritchie and Douglas McIlroy. ... This article is about operating systems that use the Linux kernel. ... This article or section does not adequately cite its references or sources. ... Windows redirects here. ... File Allocation Table (FAT) is a partially patented file system developed by Microsoft for MS-DOS and was the primary file system for consumer versions of Microsoft Windows up to and including Windows Me. ...


The DOS/Windows hierarchy is different from the implementation of the Unix/Linux hierarchy.


For DOS/Windows, the hierarchy (along with examples):

  • Drive (C:)
    • Directory/Folder (C:My Documents)
      • Sub-directory/Sub-folder (C:My DocumentsMy Pictures)
        • File (C:My DocumentsMy PicturesVacationPhoto.jpg)

On Unix/Linux machines, the hierarchy is:

  • The root directory (/)
    • Directories (/usr "user" or /dev "device")
      • Sub-directories (/usr/local)
        • Files: data, devices, links, etc. (/usr/local/readme.txt or /dev/hda1, which is the hard disk device)

Commands such as:

  • Unix/Linux: cp, mv
  • DOS: copy, move
  • Windows: the Cut/Copy/Paste commands in the file menu of Explorer

can be used to manage (copy or move) the files to and from other directories.


See also


  Results from FactBites:
 
Computer file management (1544 words)
A lot of computer users like to have specific programs startup as soon as they turn on their computer For example if you were in business you may want your accounts program and maybe WORKS to open with the turning on of the computer.
Files can either be saved into the desktop, or they can be dragged onto it from My Computer or Explorer.
That icon is your file, to delete the file (ie: send it to the Recycle Bin), right-click once on the icon and choose delete from the Context Menu that appears.
Computer file management - Wikipedia, the free encyclopedia (437 words)
The term computer file management refers to the manipulation of documents and data in files on a computer.
Although the file management paradigm described above is currently the dominant one in computing, attempts have been made to create more efficient or usable paradigms.
Files can also be managed based on their location on a storage device.
  More results at FactBites »

 
 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments

Want to know more?
Search encyclopedia, statistics and forums:

 


Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms, 1022, m