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In this article, we will show two ways to install VLC Media player depending on whether you choose the graphical interface or the command line of your Debian system.
Disk partitions are the basis of storing our data on disks. To be able to handle partitions, in this part of RHCSA exam preparation tutorial we will add an empty disk to our test RHEL 8 system, and create, list, and delete a new partition on it.
Clam AntiVirus (ClamAV) is an open-source anti-virus framework used by millions of people and companies all around the world, providing free malware protection by default for everyone. It is especially effective on email servers, as it works on just about all possible MTAs (postfix, exim, etc). It is easy to set up, customizable, and has a reliable method of virus definition updates. In this tutorial, we’ll be explaining how to install ClamAV on your Debian 9 VPS, as well as how to use it to check for and remove any malware or security vulnerabilities.
Mono is a platform for developing and running cross-platform applications based on the ECMA/ISO Standards. It is a free and open-source implementation of Microsoft’s .NET framework.
List symlinks or symbolic links or soft links in Linux.
A command-line method for doing multiple pivots on a table of market data, and how to organise Chinese characters when you don't understand them.
The DNS or the Domain Name Server can be characterized as the most essential part of your link to the internet. Our systems also maintain a list of DNS records so that we can access our frequently visited websites faster through a quick resolution of IP addresses. This cache on our system needs to be flushed from time to time. This tutorial shows how to flush the DNS cache on Debian 10 by using systemd and the networking service.
Ranger is an incredibly handy terminal-based file navigator that's written in Python and is available for Linux and Mac. Ranger allows you to navigate your filesystem using the arrow keys on your keyboard: Up/Down to select files in the current directory (middle pane), and Left/Right to hop back and forth through levels and into directories. When you're focused on a directory, it shows you the contents in the right-hand panel.
MySQL is a free, open-source and one of the most popular database systems around the globe. In this tutorial, we will show you how to install MySQL 8 on CentOS 8 server.
Testing often begins with what we hope happens. In my previous article, I demonstrated how to virtualize a service you depend on when processing the "happy path" scenario (that is, testing the outcome of a successful login attempt).?But we all know that software fails in spectacular and unexpected ways. Now's the time to take a closer look into how to process the "less happy paths": what happens when someone tries to log in with the wrong credentials?
Glance is an image service that allows you to discover, provide, register, or even delete disk and/or server images. It is a fundamental part of managing images on OpenStack and TripleO (which stands for "OpenStack-On-OpenStack").
Buildah can greatly increase the speed of builds and reduce the number of resources required to support a build farm
Ubuntu has a feature named Unattended Upgrades, which installs the latest security updates automatically. This guide describes how to disable unattended upgrades on Ubuntu.
There's a wealth of information for sysadmins in the /proc filesystem and it's time to explore it.
These are important PostgreSQL commands that you must know as a DevOps/Database Admin. I would recommend you to also read my earlier article for PostgreSQL Installation.
In this tutorial, we will show you how to install FlintCMS on a CentOS 7 VPS. FlintCMS is a free and open-source, super-fast, content-focused, Node.js-based Content Management System (CMS). It provides a flexible and easy-to-use interface for creating and managing websites, blogs, and other types of content.
Some time ago, I decided to move my computing environment from a Mac Mini PowerPC to a Raspberry Pi Model 2. This article describes my reasons for doing so and how I did it. While?it is quite technical in places, if you're considering switching from an existing system to something decidedly lean and mean, there are things that you need to know before making that leap. There are lots of links to click as well, which will lead you to the software and apps that I mention.
Performance appraisal has been done via attempt to set up Ubuntu 20.04
as KVM virtualization host installing Qemu && Libvirt. Please, be aware
that successful install KVM on Ubuntu 20.04 (bare metal)
might require in meantime CPU's generation Haswell at least.
Ruby is one of the most popular languages today. It has an elegant syntax, and it is the language behind the Ruby on Rails framework. In this article, we will look into different ways to install Ruby on Debian 10. In this article, we will look into different ways to install Ruby on Debian 10. We'll show how to install Ruby from the default Debian 10 repositories and using the Rbenv and RVM scripts. Choose the installation method that is most appropriate for your setup and environment.
Install restic and how to backup and restore data using Restic on Linux.
Plex is a media server software that allows you to stream your movies to any Plex client. Here we show how to create a Plex server on Raspberry Pi 4.
In my earlier article, I explained how I transformed a Raspberry Pi Zero?into a minimal, portable, go-anywhere computer system that, although small, can actually achieve useful things. I've since made iterations that have proved interesting and made the little Pi even more useful. Read on to learn what I've done.
In this short tutorial, you will learn how to send one-liner emails using sSMTP from your Linux Ubuntu/Debian terminal. But why on earth would we want to send Emails from the terminal ? Well there could be many reasons. For instance you would want to build an application which sends Emails …You will also be able to attach files to the Email.
As we all know Linux is a multi-user operating system. If you have multiple users operating on a desktop or a server, you can easily create multiple users accounts and grant permissions as per each account.
R is an open-source programming language and free environment that specializes in statistical computing and graphical representation. It is supported by the R Foundation for Statistical Computing and mainly used by statisticians and data miners for developing statistical software and performing data analysis. This article describes how to install R on CentOS 8.
In a previous article, we deployed a couple of simple websites on our k3s cluster. There were non-encrypted sites. Now that's fine, and they work, but non-encrypted is very last century! These days most websites are encrypted. In this article, we are going to install cert-manager and use it to deploy TLS encrypted sites on our cluster. How to encrypt your website with k3s and Letsencrypt on a Raspberry Pi.
PHP is a server-side scripting language, commonly used for Web development, but it is also used as a general-purpose programming language. It is the most popular server-side (back-end) programming language and it powers some of the most popular products on the market, such as WordPress, the most widely used content management system, as well as e-commerce platforms such as Magento and PrestaShop. The process of installing PHP 7.3 on CentOS 7 is a pretty easy and straightforward task, and it can be done in less than 10 minutes. In this tutorial, we will guide you through the steps of installing the latest PHP version 7.3 on a CentOS 7 VPS.
Want to try GitOps? First, you'll need your environment in Git. We'll show you how!
Convert existing iptables ruels into nftables native format in CentOS 8 and RedHat 8
Scheduling a single job is easy with the at command and can be done without going cron crazy. Find out how.
This brief guide explains how to solve "vboxdrv.sh: failed: Cannot change group vboxusers for device /dev/vboxdrv." Virtualbox error in Ubuntu.
FFmpeg is a free and open-source collection of tools for handling multimedia files. It contains a set of shared audio and video libraries such as libavcodec, libavformat, and libavutil. With FFmpeg, you can convert between various video and audio formats, set sample rates, capture streaming audio/video, and resize videos.
Vim is one of the best, highly configurable text editor that comes with a lot of unique features that you can’t find in other text editors. Today, we will discuss one of the useful feature – editing remote system’s files from the local system. This guide explains how to edit remote files with Vim on Linux.
Systems administrators are sought-after positions, and in order to get there, you’ll need to bring a solid combination of technical know-how and interview skills. Here are some tips for aspiring sysadmins to wow their interviewers.
Anyone using Docker can use Kubernetes to create a cluster. A cluster is when there are multiple systems working together as a single unit. If one system fails then the other systems will resume the failed processes to keep the resource active.
In this article, we will deploy a couple of simple websites and learn how to ingress traffic from the outside world into our cluster using Traefik. After that, we will learn how to remove Kubernetes resources as well. Let’s get started!
Most security experts agree that one of the biggest security vulnerabilities is the password. Despite a growing concern for privacy and anonymity, users and IT departments alike are ignoring basic cybersecurity best practices, especially password hygiene. In this article we will introduce you to some tools that will demonstrate how easy it is to gain unauthorized access via password cracking and brute force attacks.
Unfortunately, good code won't speak for itself. Even the most elegantly designed and well-written codebase that solves the most pressing problem in the world won't just get adopted on its own. You, the open source creator, need to speak for your code and breathe life into your creation. That's where technical writing and documentation come in.
Most of us are not familiar with the Htop Command because most of the time we use the top command to keep track of Linux system performance.
But htop is a great alternative to the top command, which has many features and options compared to the top command.
The NVIDIA Driver is a program needed for your NVIDIA Graphics GPU to function with better performance. It communicates between your Linux operating system, in this case Fedora 31, and your hardware, the NVIDIA Graphics GPU. The NVIDIA drivers can be installed by using the bash command after stopping the GUI and disabling the nouveau driver by modifying the GRUB boot menu. To install Nvidia driver on other Linux distributions, follow our Nvidia Linux Driver guide.
While so-called bullet journaling is a new trend, using analog techniques to track and manage your digital workflow is nothing new. If you're not doing it, you should be.
Out with the old, in with the new! Explore an improvement on a classic Linux tool for listing files at your command line.
Monitorix is a lightweight open-source computer network monitoring tool that can be used to monitor overall system performance. In this tutorial, I will explain how to install Monitorix monitoring server on Debian 10.
How many years do you have left to live? What are the chances you'll die before your next birthday? Life tables and gnuplot graphs offer some non-definitive answers.
If you're going to transmit large amounts of data to the cloud, you can improve performance and response times by using your Raspberry Pi as an edge gateway
Few things are more important to your machine than a good network connection. Here are three ways to configure the interfaces needed to make this happen.
Recent versions of Raspbian OS are using systemd which means it's possible to use it for disabling graphics mode on Raspberry Pi.
This brief guide explains different ways to repeat your last command in Linux operating systems with practical examples.
Discover alternatives, which creates, removes, maintains, and displays information about the symbolic links comprising the alternatives system.
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