In this article, we dive in and see how you can install MongoDB on CentOS 7. MongoDB is a free, flexible and opensource NoSQL database, different from the regular SQL databases like PostgreSQL and MySQL. In MongoDB, data is stored in JSON format and does not require a schema. Installing MongoDB At the time of […]
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How to Install Elasticsearch Logstash Kibana (Elastic Stack) on Ubuntu 18.04
In this guide, you will learn to install Elastic stack on Ubuntu 18.04. Elastic stack, formerly known as ELK stack is a collection or stack of free and opensource software from Elastic Company designed for centralized logging. It enables the searching, analyzing and visualization of logs from different sources in a myriad of formats. Centralized […]
Python Comparison Operators
Python Comparison Operators are used to compare two objects. The output returned is a boolean value – True or False. Python Comparison Operators There are 6 types of comparison operators in Python. Comparison Operator Description Example == returns True if two operands are equal, otherwise False. a == b != returns True if two operands […]
How to Install Laravel Framework on Ubuntu 18.04 LTS
In this guide, we look at how to install Laravel framework on Ubuntu 18.04 server. Laravel is a free and open source PHP web framework. It was created in 2011 by Taylor Otwell and has since been used for development of robust mobile applications using the MVC model. Let’s dive in and see how we […]
Python Bitwise Operators
Python bitwise operators are used to perform bitwise calculations on integers. The integers are converted into binary format and then operations are performed bit by bit, hence the name bitwise operators. Python bitwise operators work on integers only and the final output is returned in the decimal format. Python bitwise operators are also called binary […]
Send Email in Linux from Command Line
In this article, you will learn how to send emails using the popular mail commands. It’s equally important that you also learn how to send Linux email attachments. Some of the command line options used are: -s: denotes the mail’s subject -a: for denoting attachment -c: for the copy email address (CC) -b: for the […]
Python Logical Operators
Python logical operators allow us to perform logical AND, OR, and NOT operation between boolean values. In this article, we will look into the logical operator’s execution in more detail. Python Logical Operators There are three logical operators in Python. Logical Operator Description Simple Example and Logical AND Operator flag = True and True = […]
Python AND Operator
Python operators can be divided into multiple categories. Two of them are – bitwise operators and logical operators. Bitwise operator performs operations on integers in binary format whereas logical operators perform operations on boolean values. Python AND Operator There are two types of Python AND Operators. Bitwise AND Operator: It’s denoted by & and work […]
Install PostgreSQL 11 and PgAdmin4 on Ubuntu 18.04
In this guide, you will learn how to install PostgreSQL 11 and PgAdmin4 on Ubuntu 18.04 LTS. PostgreSQL PostgreSQL is a free and open source cross-platform Relational Database Management System (RDBMS). It is widely used by developers in the development environment and in production environments as well. PostgreSQL 11 was released in November 2018 and […]
Java 11: New Methods in String Class
Java 11 doesn’t have a lot of language specific features. So, it was surprising to see 6 new methods getting introduced in Java String Class. Java 11 String Class New Methods Let’s look at these new String class methods one by one. isBlank(): This method returns true if the string is empty or contains only […]