Author binaykumar

Mastering the “grep” Command: A Comprehensive Guide

The grep command, short for “Global Regular Expression Print,” is a powerful and versatile tool used to search for patterns within files. As one of the most frequently used commands in Unix and Linux, grep is invaluable for developers, system… Continue Reading →

Discovering Your Way with the Unix “pwd” Command

Navigating the labyrinth of directories in a Unix system can be daunting, but there’s one little command that acts like your trusty compass: pwd. Short for “print working directory,” this command is your quick check-in to confirm exactly where you… Continue Reading →

Mastering the Shutdown: How to Safely Turn Off Your Ubuntu or Linux Server

Introduction Shutting down a Linux server may seem straightforward, but it’s a critical operation that requires careful attention to ensure data integrity and system stability. Whether you’re an experienced system administrator or a Linux newbie, understanding the right methods to… Continue Reading →

Get the Size of a Directory in Ubuntu Using Bash or Shell Commands

Understanding the size of directories is crucial for managing disk space, optimizing performance, and maintaining a healthy file system. Ubuntu, a popular Linux distribution, offers several commands to determine the size of directories efficiently. Here, we’ll explore some of the… Continue Reading →

Unveiling Your CPU’s Secrets with “lscpu” Command

When it comes to understanding your server or computer’s inner workings, knowing your CPU’s capabilities is crucial. Enter the lscpu command—a simple yet powerful tool in the UNIX arsenal. Whether you’re a system administrator, a developer, or just a curious… Continue Reading →

grep -Rnw ‘‘ -e ‘‘ please evaluate and explain it

Putting it all together, the command is used to search for the specified word or pattern within files in the specified directory and its subdirectories. It will display the matching lines along with their line numbers and will only match… Continue Reading →

Matches, Closest And Contains Method in JavaScript

These are Many functions and methods available for the convenience in JavaScript out of which here i am going to discuss three method which are more often used in JavaScript programming. So let’s get into it and see how these… Continue Reading →

How to Install Let’s Encrypt SSL on Ubuntu 20.04

SSL/TLS encryption is an integral part of the network infrastructure. We will look at the process of getting the free SSL Certificate Let’s Encrypt. pre-requisite for the installing SSL:- A valid Domain name, Its a DNS – A record which… Continue Reading →

JavaScript Array’s Fundamentals

Q:- What is JavaScript Arrays ? Answer:- Collection of item’s can be called as Array and An Array can have collection of either Same or different items. The Items can be a Number, String, Boolean, Object etc. Eg:- const marks… Continue Reading →

How to Renew Your Lets Encrypt SSL Certificate

This is the post for those who have already installed SSL certificate from the Let’s Encrypt. There may be the case you might have multiple website running on to the server. Then in that case you have to identify the… Continue Reading →

Non-Primitive datatypes in JavaScript

Non-Primitive data type in JavaScript is Object. It holds the address or reference of the key value pair that can be single or multiple key values. These are also called as derived datatypes. //Non-primitive data type // object const obj… Continue Reading →

Expression and Operators in JavaScript

if anyone ask you to define the what is expression then how will you explain it. well it is quiet easy let me do for you. “A fragment of code that produces values is called an Expression.” Literally, you can… Continue Reading →

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