What is an IP Address? A Internet Protocol address (IP address) is the numerical label assigned to each hardware devices connected to a computer network that uses the Internet Protocol to identify the devices. In general terms, it is an identity of any devices. An IP address allows a device to communicate with other devices over an IP-based network like the LAN or Internet. Read: How to Flush/Clear DNS Cache on Windows?...

Rules for Declaring Variables in Python There are a few rules that you need to follow when declaring variables in Python: Variable names can only contain letters, numbers, and underscores. They cannot contain spaces or special characters. Variable names cannot begin with a number. Variable names are case-sensitive, so name and Name are considered to be two different variables. Python has a number of reserved words that cannot be used as variable names....

How To Exclude Packages from Apt-Get Upgrade 1. Exclude Packages with Command You can simply use –exclude command line parameter with yum to exclude specific packages from getting update. You can specify multiple packages as per your requirement. For example, below command will update all packages except kernel and php. 2. Exclude Packages from Auto Update In addition, You can also add entries in /etc/yum.conf to disable packages updates permanently. Using this option, you don’t need to specify each time you run yum update command from prompt....

Tips for Generating Secure Passwords: Here are a few tips to keep in mind when generating passwords: Use a strong, random password generator to create passwords that are difficult to guess or crack. Use a different password for each account or service that you use. Use long passwords that are at least 12 characters long. Use a combination of letters, numbers, and special characters in your passwords. Avoid using easily guessable words or phrases in your passwords....

Install Apache Solr on CentOS, RedHat Step 1 – Install Java Apache Solr 7 required Java 8 or greater to run. Make sure your system fulfills the Java requirements of Apache Solr. If you don’t have java installed on your system visit the below articles. Verify active Java version: You can also follow this tutorial to install Java on Ubuntu Linux. Step 2 – Install Apache Solr on Ubuntu Now download the required Solr version from its official site or mirrors....

This tutorial will help you to install Elasticsearch on Ubuntu 20.04 LTS system. Prerequisites Login to your Ubuntu system using sudo privileges. For the remote Ubuntu server using ssh to access it. Windows users can use putty or alternatives to log in to Ubuntu system. Step 1 – Install Java Elasticsearch required Java run time installed on system. Ubuntu 20.04 system users, can run the following commands to install Java (OpenJDK 11): After installation, check the Java version on your system: Also, make sure the JAVA_HOME environment variable is configured:...

This tutorial will help you to configure the ionCube loader with PHP on CentOS 8. How to Install Ioncube Loader in WHM/cPanel Prerequsities Shell access to the CentOS 8 system with sudo privileges account. Complete initial server setup for newly installed systems. Install PHP and Apache on CentOS 8 Step 1 – Download ionCube Loader First of all, download the latest ionCube loaders on your system from ioncube download page....

In this article, we’ll show you how to install the Ionic Framework on Ubuntu 22.04 using Node.js and NPM. Let’s get started! Step 1 – Installing Node.js Node.js is the primary requirement for running Angular applications. You can install the required Node.js using NVM command-line utility. Log in to your Ubuntu system and follow: Step 2 – Install Ionic Framework on Ubuntu Next, you need to install the Ionic node module on your system....

We will cover the prerequisites for installing Laravel on Fedora, such as installing PHP and a web server, and we will walk you through the steps to install Laravel using Composer, a dependency manager for PHP. We will also provide some tips and best practices for configuring and optimizing Laravel on Fedora. By the end of this tutorial, you will have a fully functional Laravel installation running on Fedora, and you will be ready to start building your own web applications with Laravel....

1. Prerequisites In order to install Nginx on Ubuntu, you must have root or sudo privileged user access to your system. For the remote systems can use ssh command or putty for Windows user to login. 2. Install Nginx on Ubuntu The Nginx latest packages are available under default repositories for all Ubuntu’s versions, You can directly install them by running following commands After installation of Nginx service, run below command to check the status of Nginx service....

This tutorial contains 3 ways to install Node.js on the Fedora system. Use one of the below options as suitable to you. Prerequisites We assume you already have shell access to your Fedora system with sudo privileged account. Login to your Fedora system and open a terminal. Method 1 – Install Node.js from Default Package Repository The Fedora default package repositories contain a stable version of Node.js. It may not be the latest version but it will be a stable release and can be used for working with it....

The current Apache Tomcat 9.0.50 release is available. This tutorial will guide you through step by step installation of the Apache Tomcat server on Debian. Let’s follow to Install Apache Tomcat 9 on Debian 10/9/8. Step 1 – Prerequisites You must have root user or sudo privileged user access to install Tomcat on the Debian system. Login to your Debian system with shell access. Use SSH to get access to the remote Linux system....

Not just any port in the storm The internet market is quite competitive and there is no shortage of offers to choose from. Unfortunately, the bitter truth is that you do not always get what you pay for. Sometimes, internet service providers (ISP) downright cheat us and they get away with that due to the fact that the general population is uncertain of how to identify and diagnose the problem....

This tutorial will help you to secure Gitlab service with Let’s Encrypt SSL certificate with enabling the auto renew feature. If you are going with a fresh installation have a look at below guides. Install and Configure Gitlab on Ubuntu 20.04 Install and Configure Gitlab on CentOS 8 Prerequisites Login to your Gitlab system with a sudo privileged account. Also make sure to create an A Record points your domain/subdomain to the public IP address of your Gitab server....

The JSON file contains values in name/value combination. You can use “_comment” as name part of JSON (just for example) and the comment text as value of this pair, that can be ignored by the JSON parser. Below is the sample JSON file including comments in JSON data. This is not the solution but an option to use comments in a JSON file.

Using Environment Variable In a very simple word, you can simply set the following environment variables on your system. The curl command will automatically use these variables as a proxy. You can export those variables in your shell, like: After exporting the environment variables, the curl command will automatically use the above proxy during a remote connection. Once your work is done, you can simply unset these environment variables like:...

This tutorial will help you to set up a postfix server to forward the email to other email accounts. Setup Mail Forwarding in Postfix Forwarding emails to remote mailboxes via Postfix does not require local mailboxes. Any email received by the Postfix will be routed to remote mailboxes based on configuration. Below example configuration will help you to configure example.com as mail forwarding domain on Postfix. Edit Postfix main.cf in editor: Add your mail forwarding domain to virtual_alias_domains and a configuration file with routing rules with virtual_alias_maps....

Linux has numerous distinct features for different users. There are lots of Linux distributions for a variety of uses, including education, gaming, and developing software. Somehow I can find so many different Linux distributions that I can’t even remember the exact numbers. There are some unique tendencies, revealed in some clones of each other. So it’s kind of confusing. But that’s the beauty of Linux. Few features of Linux distributions are quite identical to one another, but some distributions have their own user interface and unique features....

In this tutorial, you will learn a simple process of specifying node.js version using .nvmrc file. Using .nvmrc Create a .nvmrc file containing a node version number in your project. You can use the nvm —-help to check other options. After that you can simply run commands like nvm use, nvm install and nvm run etc. This will the default node.js version defined in .nvmrc file. For example, to make nvm default to use 12....

Basic Concept of Firewalld FirewallD uses zones and services instead of iptables chain and rules. Zones are a set of rules that specify what traffic should be allowed depending on the level of trust you have in a network your computers connected to. Network interfaces assigned a zone to dictate a behavior that the firewall should allow. The firewalld is managed using the firewall-cmd command-line tool. It provides an interface to manage runtime and permanent configuration....