Linux Programming

Basic Of Linux:

Linux is freely distributed implementation of a UNIX like kernel ,the low level core of an operating system.

As Linux is inspired from Unix at most all programs written for UNIX,can be compiled and run on Linux.

Unix was originally written in c and the majority of Unix applications are written in c but c is not the only option available to Linux programming.Programming languages available to the Linux programmer are c,c++,FORTRAN,icon,java,javascript,Lisp,sql,Borne shell.

Linux applications are represented by two special types of files 

.Executables-executable files are programs that can be run directly by computer,they correspond to windows.exe.

.Scripts-scripts are collections of instructions for another program ,an interpreter ,to follow .these correspond to windows .

File system attributes which are used to indicate that a file is a program that may be run.In Linux ,we can replace scripts with compiled programs without affecting other programmer people who call them.

When we log in to Linux system ,we interact with a shell program(bash) that runs programs in the same way that the windows command prompt does.