Gain insights into the power of the command line. Learn about Linux BASH through theoretical and practical exercises, mastering essential concepts and commands for efficient programming.

Ever wondered why command line is still in use even when there are hundreds of human-friendly GUI’s and tools available? Everyone in the programmer's world would agree on one thing: Command Line is far more powerful than any GUI. It provides a richer experience in terms of speed and expressiveness.

For beginners, it might be hard to appreciate its beauty and a little challenging to shift from an interactive interface to a blank box with just a “$” sign showing that keeps prompting the user to enter complex commands if you want to get something done. This is why we felt the need to build a course which could help the user overcome his/her fear of using the terminal (we have all been there).

The objective of this course is to help you get a strong grip over Linux, mainly focusing on BASH. You will be covering both, the theoretical and practical sides. First, you will learn a bunch of concepts necessary to understand things and then study some nifty commands to get useful things done out of them.

Bash for Programmers

Linux is a free open-source operating system that works just like Windows and Mac OS X. It is a `Unix` clone, multi-tasking and a multi-user operating system that was developed by *Linus Torvalds* with the collaboration of the developers around the world.

# Linux - A Kernel, not an Operating System
Strictly speaking, Linux is a kernel, not an entire operating system. A kernel provides access to computer hardware and a controlled access to system resources such as:

- Security and firewall
- GNU libraries and utilities
- Other management and installation scripts
- Logged in users
- Running and loading programs to memory
- Networking systems
- Files and data
- Process management
- Device management
- I/O management


# <mark> Shell Classification </mark>
- Command line shell
- Graphical shell

# <mark> Introduction to Linux Shell </mark>
>A shell is an environment provided for the user to interact with the machine. 

Shell is not a part of Linux kernel, but it uses the kernel to execute programs, create files etc. Several command line shells are available for Linux including:
- **BASH ( Bourne-Again SHell )** -	It's the default open source shell on many Linux distributions today
- **CSH (C SHell)**	- The C shell's syntax and usage are very similar to the C programming language
- **KSH (Korn SHell)** - It is a high-level interactive command language
- **TCSH** - It is an enhanced but completely compatible version of the Berkeley UNIX C shell (CSH)
- **ZSH** - It is an interactive shell that incorporates features of other Linux shells including some unique ones too
- **Fish (Friendly Interactive Shell)** - It is a smart and user-friendly interactive shell along with some other features

Delve into all the basic concepts of Linux Shell. 

Introduction to Linux

Delve into all the basic concepts of Linux Shell.

Introduction to Bash

Navigation Commands

File Manipulation Commands

Permission Commands

Filtering & Searching Commands

System & Process Commands

Variables and Environment

An Overview of Commands

Introduction to Linux