administration

Curl command on Linux

Curl file download on Linux

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The cURL linux command can use various network protocols to download and upload data on Linux. Normally, using the cURL command is pretty basic, but it has a ton of options and can grow more complicated very quickly. In this guide, we’ll go over some of the more common uses for the cURL command and show you syntax examples so you can use it on your own system.

In this tutorial you will learn:

  • What is cURL and what can it do?
  • How cURL compares to wget
  • How to download a file from a website with cURL
  • How to follow redirects
  • How to download and untar a file automatically
  • How to authenticate with cURL
  • How to download headers with cURL
  • How to use quiet mode with cURL

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Apache Hadoop on Ubuntu 20.04 Focal Fossa

Ubuntu 20.04 Hadoop

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Apache Hadoop is comprised of multiple open source software packages that work together for distributed storage and distributed processing of big data. There are four main components to Hadoop:

  • Hadoop Common – the various software libraries that Hadoop depends on to run
  • Hadoop Distributed File System (HDFS) – a file system that allows for efficient distribution and storage of big data across a cluster of computers
  • Hadoop MapReduce – used for processing the data
  • Hadoop YARN – an API that manages the allocation of computing resources for the entire cluster

In this tutorial, we will go over the steps to install Hadoop version 3 on Ubuntu 20.04. This will involve installing HDFS (Namenode and Datanode), YARN, and MapReduce on a single node cluster configured in Pseudo Distributed Mode, which is distributed simulation on a single machine. Each component of Hadoop (HDFS, YARN, MapReduce) will run on our node as a separate Java process.

In this tutorial you will learn:

  • How to add users for Hadoop Environment
  • How to install Java prerequisite
  • How to configure passwordless SSH
  • How to install Hadoop and configure necessary related XML files
  • How to start the Hadoop Cluster
  • How to access NameNode and ResourceManager Web UI

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Conky system monitoring on Ubuntu 20.04

Ubuntu 20.04 System Monitoring with Conky widgets

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Conky is a system monitoring program for Linux and BSD that runs on the GUI. It monitors various system resources to report the current usage of CPU, memory, disk storage, temperatures, users logged in, currently playing song, etc. in a sleek little widget on your screen. This way, you’re able to see at a quick glance how your computer’s components are being utilized.

Conky is lightweight and highly configurable, so you’re able to run it without having a negative impact on your system or seeing it stick out like it doesn’t belong. We’ll show you how to get it installed on Ubuntu 20.04 Focal Fossa and some configuration options to get it looking nice.

In this tutorial you will learn:

  • How to install Conky on Ubuntu 20.04
  • How to enable Conky to start at boot
  • How to customize the information Conky reports
  • How to customize the look of Conky

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Ubuntu 20.04 disk space check

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There are a few tools at your disposal for checking disk space on Ubuntu 20.04 Focal Fossa. These tools and commands can be used to check a hard drive’s capacity and the size of the files on it, or just to check the size of a particular directory or file.

We’ll show you how to get a visual representation of how the hard drive space is being used on your system, as well as a few commands that you can enter into the terminal to quickly find the stats you need.

In this tutorial you will learn:

  • How to check hard drive storage with Disk Usage Analyzer
  • How to check hard drive storage with Disks utility
  • How to check hard drive storage with df command
  • How to check hard drive storage with du command

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Upgrading Raspberry Pi to Ubuntu 20.04

Upgrading Raspberry Pi to Ubuntu 20.04

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The Ubuntu upgrade process on Rapsberry Pi is not different to the upgrade process on a regular Ubuntu desktop or server. This article will provide you with steps outlining how to proceed with and upgrade from Ubuntu 18.04 to Ubuntu 20.04 on Rapsberry Pi. For more detailed information please visit our guide on How To Upgrade Ubuntu To 20.04 LTS Focal Fossa.

In this tutorial you will learn:

  • How to update and upgrade your current Ubuntu system
  • How to upgrade from Ubuntu 18.04 to Ubuntu 20.04

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How to use the Tor network to browse online on Ubuntu 20.04 Desktop/Server

Install Tor proxy on Ubuntu 20.04 Linux

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Tor is free software that allows a user to have complete anonymity online. It can be used to avoid having websites and applications track your location or attempt to identify you. It does this by routing your network data through a pool of servers around the world, while also stripping identifying information from packet headers.

It’s often used to avoid region blocks on the likes of Netflix or YouTube. Some users like it because it prevents ad tracking companies from building a profile on you based on your browsing habits and serving personalized ads. Still, others are just a little paranoid and appreciate the assurance that no one can spy on their internet activity.

You can use Tor on Ubuntu 20.04 Focal Fossa by installing the Tor client. We’ll show you how to set it up in this guide, which includes browser configuration and enabling all of your shell commands to run through Tor’s network.

In this tutorial you will learn:

  • How to install Tor on Ubuntu 20.04
  • Test your network connection through Tor
  • How to Torify your shell temporarily or persistently
  • Enable and utilize the Tor control port
  • Configure web browser to use Tor network

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How to install Ubuntu 20.04 on VirtualBox

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In this tutorial, we’ll show you how to install Ubuntu 20.04 Focal Fossa in a VirtualBox virtual machine. You’ll be able to follow along with this guide whether you are using Windows, Ubuntu, or some other Linux distribution. Configuration of VirtualBox and the installation of Ubuntu 20.04 itself stays very consistent across various platforms.

Installing Ubuntu in a virtual machine is a great way to test out applications without having to install software on your host system. It’s also an excellent way to test out Ubuntu itself, if you aren’t already running it. If you’re a Windows 10 user, you also have the option to install Ubuntu 20.04 alongside Windows 10 (dual boot), if you’d prefer that to a virtual machine.

In this tutorial you will learn:

  • How to configure VirtualBox to host Ubuntu 20.04
  • How to create a Ubuntu 20.04 virtual machine

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Deploying Kubernetes on Ubuntu 20.04 Focal Fossa

How to install Kubernetes on Ubuntu 20.04 Focal Fossa Linux

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Kubernetes is leading software in container orchestration. Kubernetes works by managing clusters, which is simply a set of hosts meant for running containerized applications. In order to have a Kubernetes cluster, you need a minimum of two nodes – a master node and a worker node. Of course, you can expand the cluster by adding as many worker nodes as you need.

In this guide, we’re going to deploy a Kubernetes cluster consisting of two nodes, both of which are running Ubuntu 20.04 Focal Fossa. Having two nodes in our cluster is the most basic configuration possible, but you’ll be able to scale that configuration and add more nodes if you wish.

In this tutorial you will learn:

  • How to install Docker
  • How to install Kubernetes
  • How to configure a master and worker node
  • How to join a worker node to a Kubernetes cluster
  • How to deploy Nginx (or any containerized app) in a Kubernetes cluster

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Stacer system monitoring tool on Ubuntu 20.04 Focal Fossa Desktop

How to install Stacer on Ubuntu 20.04 Focal Fossa Linux Desktop

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In this tutorial we will be installing the Stacer system monitoring tool on Ubuntu 20.04 Focal Fossa Desktop.

WHAT IS STACER?
Stacer is an open source system optimizer and application monitor that helps users to manage entire system with different aspects, it is an all in one system utility.
Reference: https://oguzhaninan.github.io/Stacer-Web/

In this tutorial you will learn:

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