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Create Directory in HDFS Takes the path URI’s like an argument and creates a directory or multiple directories. Remember that you must create a home directory in HDFS with your system’s username. For example, you are logged in as hduser on your system, So first create /user/hduser else you will get this error, Now create directory structure inside it Copy Files to HDFS After creating directory structure, Now put some files to HDFS from your local file system....

This tutorial uses array_push() function to insert or append a new element to end of the Array. PHP – Append Element to Array The following example creates an initial array with two elements (as “black”,”blue”). After that add use array_push() function to append new element “white” to the array. Output:

Most Linux distributions use OpenSSH as the default application as an SSH server. It encrypts all traffic throughout the route and provides a higher level of security. This article describes you to change the OpenSSH server port on a Linux system. Change SSH Port in Linux Changing SSH port is a straightforward process in Linux systems. Any system can use the port range 1 to 65535, For TCP, port number 0 is reserved and cannot be used....

We will discuss 2 methods for configuring static IP addresses on Fedora using GUI and terminal. Method 1: Configuring Static IPv4 Address on Fedora with GUI The Fedora Desktop editions provide a graphical user interface for managing the system configuration. You can quickly configure the network interfaces using GUI. Follow the below steps to configure a static IP address on Fedora Desktop systems. Method 2: Configuring Static IPv4 Address on Fedora with CLI The fedora provides nmcli command-line tool for managing NetworkManager....

However, not all companies are willing to make the necessary investments, and definitely, not all threats are viewed as equal. While company will most definitely employ basic security solutions, such as firewalls and anti-viruses, not everybody is makes the necessary investment into privileged account security and user action monitoring, with many opting for standard built-in measure that their software and systems provide. Linux in particular has the reputation for being less vulnerable to malware, but its privileged accounts are in fact very prone to both hacker attacks and misuse by malicious insiders....

Prerequisites Before diving into the article, let’s make sure we have everything ready. You will need aws cli installed and configured on your machine. You already have created a User Pool in your AWS account Find out the App client id at User Pool » App integration » App clients and analytics Steps to Create Cognito User in AWS Let’s say we want to create a user named “Rahul”. Let’s also say that John is from India, and wants to be identified by his “[email protected]” email address....

Once you are connected to a remote host file time via SSH, the SSH clients check for the host key file under the known_hosts file. If the key is found, you will be connected to a remote server after authentication, but if key doesn’t found in the known_hosts file, the command will show a warning message and a prompt to accept or reject the connection request. Once you accepted the by typing “yes”, the key is added in the known_hosts file....

The Certbot provides an easy way to generate Let’s Encrypt free certificates for all websites that support HTTP and serve their content over HTTPS. In this article, we will see how to use Certbot to automate the process of generating Let’s Encrypt certificates. Step 1 – Installing Certbot Most Linux systems have the certbot package under default package repositories. is a tool to obtain certificates from Let’s Encrypt and configure them on your web server....

A Snap package is containerised software packages build by Canonical team for the Linux based systems. Nodepad++ is also available as Snap package for the installation. This tutorial will help you to install Nodepad++ on Ubuntu 18.04 LTS Linux system. Prerequisites You must have Desktop installed on your Ubuntu system. Login to your system on desktop using sudo privileged account. Step 1 – Install Nodepad++ on Ubuntu 18.04 You system must have installed and running Snapd service....

Parse dashboard is another application built on node.js by the parse developers. It is an front-end web interface for managing backend parse server. You can add and manage multiple parse server from single dashboard. This tutorial will help you to install and configure parse server and parse dashboard applications on Ubuntu system. Prerequisites Setup a sudo privileged account and apply initial security by following initial server setup Login to instance via SSH as root account...

The latest version of this database system is PostgreSQL 13.2, while versions 12.6, 11.11, 10.16, 9.6.21, & 9.5.25 still getting regular updates. This tutorial describes how to install the latest PostgreSQL on Ubuntu 20.04 LTS Linux system. Also, include the steps to install pgAdmin4. Prerequisites A running Ubuntu 20.04 LTS system with shell access. Log in as a sudo user and press “CTRL+ALT+T” to open a terminal. Then install a few required packages....

A snapcraft package of postman is officially build the official team. The snap packages provides an efficient way of packaging and deployment of application on multiple Linux operating systems. This tutorial will help you to install Postmap on Ubuntu 18.04 Linux system. Prerequisites Login to your Ubuntu 18.04 LTS system with sudo privileged account. Install Postman on Ubuntu 18.04 Postman snap package is available on the snapcraft. You must have snapd service installed on your Ubuntu system....

Our previous tutorial describes you to configure Puppet master node on a Ubuntu 20.04 system along with client node. If you need to add more client server to existing Puppet network, just install the Agent server on the server. This tutorial describes you step-by-step setup to install Puppet Agent on Ubuntu 20.04 system. Also helps you to connect a client node with master node. Prerequisites You must have: Assuming you already have Puppet master node....

1. Requirements This Python installation required GCC compiler on your system. Login to your server using ssh or shell access. Now, use the following command to install prerequisites for Python before installing it. Read: How to Use SSH to Connect Remote Linux Server 2. Download Python 3.6 Download Python using the following command from the Python official site. You can also download the latest version in place of specified below. Now extract the downloaded package....

This tutorial will help you to install RabbitMQ on Ubuntu 18.04 LTS and 16.04 LTS systems. Prerequisities Login to your Ubuntu system and update current packages. Also, included the below step based on our reader’s experiences added in the comments section. Remove erlang packages already installed on your system. Step 1 – Install RabbitMQ on Ubuntu First of all, enable the RabbitMQ PPA repository on your system. Also, import rabbitmq signing key on your system....

Prerequisites You must have shell access with sudo privileged account access to Debian 10 system. First of all, Login to your system and upgrade the current packages. Step 1 – Install Redis on Debian 10 Redis packages are available under the default apt repository. You can directly install Redis on Debian 10 system without adding any PPA. Run the following command to install Redis on Debian: After installation, enable Redis service to start on system boot....

This article will help you to install Wine 5.0 Stable Release on LinuxMint systems using the PPA. Step 1 – Prerequisites First of all, If you are running with a 64-bit system enable 32-bit architecture. Also, install the key which was used to sign packages of wine. Use one of the following commands to enable the Wine apt repository in your system based on your operating system and version....

You must have installed php-simplexml extension on your system to use examples of this tutorial. A Sample XML File Here is a sample XML file used for this tutorial. The XML filename is employees.xml which you will see in further examples of this tutorial. Read Specific XML Elements Use simplexml_load_file function to load external XML file in your PHP program and create an object. After that, you can access any element from the XML by this object as follows....

You must have mod_rewrite enable on your Apache server. The rewrite module is required to apply these settings. You also have enabled .htaccess in Apache virtual host for Laravel. Edit the .htaccess file so that it contains the following code: Now you should be able to access the website without the “/public/index.php/” part.

Xvfb (X virtual framebuffer) is an in-memory display server for a UNIX-like operating system (e.g., Linux). It implements the X11 display server protocol without any display. This is helpful for CLI applications like CI services. Step 1 – Prerequisites Login to your Debian system as sudo privileged user and execute the following commands to install the required packages on your system. Also, install Java on your system. Use below command to install OpenJDK on your system, If you like install Oracle Java 8 on your Debian system....