Chapter 4 Basic principles in Linux!

Basic Principles in Linux!

1. Everything is a file :

In Linux everything is considered as a file. Unlike windows, all devices like cd-rom, Ram, keyboard ,Monotor etc are considered as specific files. And these devices work accourding to its file configuration.

2. Configuration data of the system is stored in text usually named with extension, .conf :

All the configuration files of the system are saved as text file having an extension .conf.  We need to edit these files using text editors like VI, VIM, PICO, NANO etc to change the system configuration. And system updation is done by modifying these conf files. Most of the system conf files will be located under the location /etc.

3. Connection pipes for standard I/O to chain programs :

The pipe operation connects the standard O/P of one program to the standard  I/P of an another. And such a  chain of programs connected is called a pipeline.

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Related posts:

1. Chapter 7 Basic Commands in Linux.
2. Chapter 11 Basic Shell Scripting in Linux!
3. Chapter 8 File types in Linux.
4. Chapter 6 Getting help in Linux!
5. Chapter 9 Advanced Linux commands!