This is part 2 (hopefully final) of my SED cheatsheet and here, I will explain pattern matching and regular expression in SED. So let’s jump straight into it. Let’s consider the same file we used in part 1. The link to part 1 is given here. Pattern: Case-sensitive: sed -n ‘/lammps/p’…

SED (stream editor) is a successor of ED and QED (quick editor) in Unix-like systems and is used for plain text editing. It’s not rare to find us in a situation where we have to extract some data from a humongous file or get one or two columns from a…

A Statement of Purpose (SOP) can be referred to as a document including all the blanket statements about an applicant’s life story. In other words, an SOP encompasses every relevant positives-and-negatives of the applicant’s academic life. An SOP, otherwise known as the Statement of Intent or Academic Statement, can be…

Why do we need to create tables using commands and environments in LaTeX when someone already took the toll to generate the built-in functions that give out a beautiful user-interface (UI) to create tables to our satisfaction, like in Microsoft Word? Literally, we are just a few clicks away from…

So to initiate, we need to declare the type of document we want to have our project printed in; that is, whether we want an article or a book-type document. \documentclass{article} \usepackage[utf8]{inputenc} \usepackage{amsmath} \usepackage{amsthm} \usepackage{amssymb} Then, we need some packages to help the LaTeX compiler understand the lines we are…

(Prologue: In order to understand how mathematical formalism in Quantum Mechanics works, we have to get a good grasp on the Hilbert Space, and for that, we need to know what Space is in terms of mathematics before jumping onto the Hilbert Space. …

Quantum Mechanics- a hard nut to crack? Let’s break it down to its root words- Quantum and Mechanics. Let’s start with Mechanics; this is related to the mathematical formalism of things- from a grain of sand to the moon and so on- with which the whole universe can be described…

Constants in big O notations are usually ignored because they don’t add much to the complexity when the input size is very large. But, they do have significant meaning when the input is small or when we want to make a comparison between different algorithms. …