What is Linux.

 

Linux operating system

Linux is a multi-user, multi-tasking operating system first developed by Linus Benedict Torvalds in the year 1991. Linux is a 32-bit operating system. It runs on a wide variety of platforms, such as Intel, Sparc, Alpha, etc. it can be considered in every sense as a full-blown implementation of UNIX. But it cannot be called as UNIX because UNIX is a registered trademark product owned by AT&T (American Telephone and Telegraph). Linux is distributed as afree software under a free software licence called the GNU General Public Licence (GPL).

Basic Linux Elements

The basic elements of Linux are discussed in the following sub-sections:

  •  Kernel

The Kernel is at the core of LINUX system and is loaded into the memory as soon as the system starts up. It manages main memory, files and peripheral devices. Maintaining the time, date, launching applications, and allocating system resources are also the function of this part of the operating system.

  • Shell

Shell is a program which interprets commands given by the user. The command can be either typed in through the command line or contained in a file called ‘Shell script’. Commands in ‘shell script’ files are interpreted by the shell.

File System

Linux treated everything as a file. Ever a directory is treated as a file and contains entries for several other files. All the hardware devices, such as (input/output) I/O devices, storage devices, etc. are all treated as files.

The Linux file system is organised in a hierarchy which start with the root directory. The root directory is represented by forward slash (/) under the root directory there are several system directories and the name directory. 


what is linux, linux definition, linux file system, root directory

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