STRUCTURE OF LINUX

Linux is a free os which was created by Linus Torvalds at the university of Helsinky in 1991. Torvalds  started linux by creating its kernel partially by using publically available softwares , Then he release the system to his friends , to the internet and asked them to work with it and enhance it. Today 100’s of software developers around the world contributing software to the linux support. Source code of linux operating system is free. Software available for linux was developed by GNU software FSF (free software foundation ) .Structure of linux operating system include

Hardware devices : in any computer system the lowermost layer is the hardware components

Kernel : kernel is known as the core of an operating system , which control the entire operation of the system. Only kernal can directly communicate with hardware

Application programes : an application program may be a word, spread sheet , image editor ,music player etc. these application programes make the use of the computer easily

Shell : shell is an interface through which a user can interact with kernal . all the users in linux system will have their own shell running on the background . all the commands given by users will passed through the shell and interpreted to a form the kernal can understand