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There are times when your Linux desktop will just freeze and stop responding to input. Here is how you can restart the frozen desktop without rebooting.
Samba is a free and open-source software that can be used to share files, folders, and printers between Linux and Windows systems. In this tutorial, we will learn how to install Samba and configure it as a standalone sharing server on CentOS 8.
Apache CouchDB is a free and open-source NoSQL database developed by the Apache Software Foundation. It can be used as a single-node or clustered database. This article describes how to install CouchDB on Debian 10, Buster.
A network firewall is more or less what it sounds like: a protective barrier that prevents unwanted network transmissions. They are most frequently used to prevent outsiders from contacting or using network services on a system. For instance, if you’re running a laptop at school or in a coffee shop, you probably don’t want strangers […]
The user will only change the password on some of the servers they use, and they won’t change the password on the servers they don’t use often.
To avoid this situation, we have created a shell script that sends you a list of user accounts that expire within 10 days.
Atbswp is a new graphical utility (Python3) that can be used to record the mouse and keyboard events. You can then reproduce (play) them identically as many times as you want by either clicking a button, or save the mouse and keyboard actions as a script and run it without having to relay on Atbswp.
Setting up a PXE system will streamline new system installs, but the process is lengthy and requires attention to detail. This part one of two articles walks you through the process.
We intend to testify F32 KVM Hypervisor on Penryn's box with 8 GB RAM. However, after install KVM on F32 WKS we appear to be able to launch Manjaro Gnome 19.02 as KVM guest @F32 Workstation Virtualization Host as well as CentOS 8.1 Guest with no issues at all.
In this article, we will explain how to change the current time zone of a Debian 10-Buster system on the command line and trough the GNOME GUI.
This Linux high availability cluster introductory article walks you through the basic protocol that underpins Keepalived, which is a software implementation of VRRP on Linux.
If you already have a Nextcloud server in place, you're going to need to set up your client devices to connect to it. Setting up the Nextcloud client on Debian is very simple, and so is setting up your folders to sync.
Retailing at $40, Raspberry Pi already gives you plenty of bang for your buck, but you can get even more out of this single-board computer by overclocking.
Sync Browser Profile Into Tmpfs (RAM) Using Profile-sync-daemon In Linux To Improve Browser Speed And Responsiveness.
How to uninstall software in Ubuntu from command line. In this guide you are going to remove software packages on your Ubuntu server or system from command line.
This brief tutorial explains how to copy specific file types while keeping the directory structure in Linux.
Visual Studio Code is an open-source, cross-platform code editor developed by Microsoft. It has built-in debugging support, embedded Git control, syntax highlighting, code completion, integrated terminal, code refactoring, and snippets.
In this tutorial, we learn how to install rpm on CentOS Linux distributions. Check how to query rpm dependencies and install rpm using yum command.
Transitioning from sysadmin to DevOps will have a cost in time and effort but will be worth it. Your benefits will include new skills, advanced tools, and fresh perspective.
Google Compute Engine lets you use virtual machines that run on Google's infrastructure inside the Google Cloud Platform. In this article, we will demonstrate how to create a virtual machine (vm) using the Ubuntu 18.04 boot disk image in Google Cloud Platform (GCP).
Want to enjoy the latest Steam games on the biggest screen in your house? Find our how to stream Steam game with Steam Link on your Raspberry Pi 4.
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
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