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Disk Management In Operating System

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 Disk Management  Disk is a secondary storage device that is used to store data.  The external devices such as hard disk, magnetic disks and floppy disks stores data in the sectors.  These devices provide the data to user programs by means of I/O requests.  Disk Management is an important function of operating system and includes disk buffering and management of swap area and disk cache.  Disk Structure  Disks provide a means to store a large amount of information for modern computer.  A disk is usually divided into tracks, cylinder and sectors.  Below fig shows the various components of a disk system.  Data is stored on a series of magnetic disks called platters. These disks are connected by a common spindle that spins at very high speed (some spindle rotate at speeds of 3600 revolutions per minute).  The two surfaces of a platter are covered with a magnetic material similar to that on a magnetic tape. Information is recorded mag...
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Editors in Linux Operating System

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 Editors  In Unix, a text file is created and modified by a program, called text editor or simply editor. Unix operating system also comes with several editors.  Types Of Editors : LINE EDITORS : The Unix editors that edit processes one line at a time are called line editors. Common example are ED and EX.  SCREEN EDITORS : Editors that makes use of whole screen for editing or processing more than one line at a time are called screen editor. With screen editor you can display and edit many lines by giving a single command. Example Vi.  Various Commands of Linux  Listing of files  '1s' command lists the files in the specified directory.  Syntax : 1s[options]  At the command prompt type 1s  [user1 @linux-mac user1]$ 1s The screen will look like this, because we have not created any directory or file.  [user1 @linux-mac user1]$ 1s [user1 @linux-mac user1]$ Find Out Where You Are  The command used for this purpose is 'pwd'. Thi...
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Linux Operating System

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 Linux Operating System Linux is an operating system that is modeled on UNIX operating system and is advanced version of UNIX.  Linux was originally developed by Linus Torvalds at the University of Helsinki.  It was initially developed for Intel 80386 processor based IBM compatible personal computer.  Over the years Linux has been ported to other platforms based on different processor architectures such as DEC (now HP) Alpha, Sun, SPARC, Motorolla etc.  Linux is an open source product and its source code is easily available.  It is a multi user system which means that more than one user can work at the same computer system at the same time.  It also supports multi - tasking that means more than one program can be made to run at the same time.  These important characteristics have helped it gain widespread acceptance among a large variety of users.  The various features of Linux are :-  Portability  The Strong thing about Linux...
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You must know about Adventure sports

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 Meaning of Adventure Sports :-  Adventure sports have been around for thousands of years, only they haven't exactly been considered sports. The words 'Adventure Sports' reveal the meaning themselves. They are thrilling and adventurous. They give a participant a brush with death and a feeling of both fear and pleasure. Adventure sports range from extreme water sports like river rafting to land activities like Rock climbing, Mountaineering etc. These activities are addictive and peaceful to some and horrifying for others.  According to sports adventure website, '' Adventure sports have been best defined as outdoor sports or activities in which the participant competes in a natural environment more against themselves than against others.'' Classification of Adventure Sports Activities  Adventure sports activities are broadly classified in 3 categories : (a) Land based Adventure activities  (b) Water based Adventure activities (water sports)  (c) Air or A...
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