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

# cd
## Definition: 
`cd` --- short for "change directory" --- is used to change Shell's current working directory. We use this command frequently to work around the hierarchy of our file system. This command is similar to `chdir` command in MS-DOS. 
## Syntax: 
```
cd [option] [directory_name]
```
## Options: 

| **Option** | **Meaning** |
| --- | --- |
| / | To change the current directory to Root directory |
| -L | This mode lets cd move directly to the directory the link is pointing to |
| -P | This mode is opposite of -L. It uses physical directories and does not follow symbolic links |
| -e | This option is only used to show an error in case the `cd` command fails to determine the directory |

## Example: 

- To move from current directory to parent directory

`cd ..`

After learning this lesson, you'll be able to switch and navigate between directories with ease.

Introduction to Bash

Navigation Commands

File Manipulation Commands

Permission Commands

Filtering & Searching Commands

System & Process Commands

Variables and Environment

An Overview of Commands

Navigate between Directories

cd

Definition: