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

> Regular expressions are a powerful way to filter out specific pieces of information by using various arithematic patterns to describe certain set of strings.

You are probably now familiar with the _wildcards_ e.g. ***.txt** to find all text files in some directory. Its regex would be something like this: `^.*\.txt$.`.

Some very important bash commands like `grep` and `egrep` use regex to search for different patterns of texts in inputs and files. Given below is a summary to make you aware of what various regex notations mean.

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## Regex Pattern Notations:

> Regular expressions are a powerful way to filter out specific pieces of information by using various arithematic patterns to describe certain set of strings.

You are probably now familiar with the _wildcards_ e.g. ***.txt** to find all text files in some directory. Its regex would be something like this: `^.*\.txt$.`.

Some very important bash commands like `grep` and `egrep` use regex to search for different patterns of texts in inputs and files. Given below is a summary to make you aware of what various regex notations mean.

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# Regex Pattern Notations:

> Regular expressions are a powerful way to filter out specific pieces of information by using various arithematic patterns to describe certain set of strings.

You are probably now familiar with the _wildcards_ e.g. ***.txt** to find all text files in some directory. Its regex would be something like this: `^.*\.txt＄.`.

Some very important bash commands like `grep` and `egrep` use regex to search for different patterns of texts in inputs and files. Given below is a summary to make you aware of what various regex notations mean.

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# Regex Pattern Notations:

This lesson gives a conceptual summary of regular expressions.

Introduction to Bash

Navigation Commands

File Manipulation Commands

Permission Commands

Filtering & Searching Commands

System & Process Commands

Variables and Environment

An Overview of Commands

Regular Expressions (Regex)

Regex Pattern Notations: