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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.
Syndaemon is command line program that monitors the keyboard activity and disables the Touchpad when the keyboard is being used.
Skype is one of the most popular communication application developed by Microsoft. It allows for instant messaging and audio, video calls. This tutorial shows two ways to install Skype on Debian 10.
LibreOffice templates save you time by making it easy to open a blank copy of documents you use often, such as budgets, form letters, and slideshow presentations. This not only serves as a quick and easy starting point for repetitive work, but it can also ensure consistency when working in groups or in a large organization. LibreOffice ships with some templates already available, but you can also create your own.
GitScrum is a free and open-source Laravel task management application that helps you to manage your projects easily. In this tutorial, we will show you how to install GitScrum project management software on Debian 10 server.
Fish (friendly interactive shell) is a smart and user-friendly command line shell that works on Linux, MacOS, and other operating systems. Use it for everyday work in your terminal and for scripting. Scripts written in fish are less cryptic than their equivalent bash versions.
Most of the modern Linux Desktop systems come with Nvidia driver pre-installed in a form of the Nouveau open-source graphics device driver for Nvidia video cards. Hence depending on your needs and in most of the situations there is no need for an additional Nvidia Linux Driver installation procedure.
Auto-cpufreq is an automatic CPU speed and power optimizer for Linux. Learn how to automatically optimize CPU speed and power with auto-cpufreq.
The command line doesn't have to be tedious, it can be awesome with these shortcuts.
Copying directories on Linux is a big part of every system administrator routine. If you have been working with Linux for quite some time, you know how important it is to keep your folders well structured. In some cases, you may need to copy some directories on your system in order revamp your main filesystem structure. In this tutorial, we are going to see how you can easily copy directories and folders on Linux using the cp command.
In this post, I will show you how to plot graphs from the Wikipedia data tables.
Firejail is a SUID security sandbox based on Linux Namespace and seccomp-bpf (Secure computing mode). Firejail can run graphical or command-line applications in a sandbox, reduces the risk of security breaches by restricting the untrusted applications.
In the article you will learn how to run and manage a docker container on Linux Ubuntu and similar distros. You will also be able to push a new image to Docker Hub
This is an informative articles on things you need to do before you can install Linux on your machine. Step by step it will guide you through everything you need.
PHP is the most popular open-source general-purpose scripting language and is widely used for web development. It’s part of the LAMP stack application suite and is used to create dynamic websites. Here's a simple way to install the latest PHP 7 on CentOS/RHEL 7 and 6 systems.
Tethering is a method of connecting one device to another for accessing the Internet.
With some devices which do not have an On The Go (OTG) USB Port, it can be difficult to connect to the Internet through another device.
Linux is a great thing that it'll keep a history of the commands you time in the ~/.bash_history file. If you'd like to see the 10 top commands you use, you can run something like the following to see what you type out the most!
The Linux history command is awesome by default, but you can make it better! By default, it'll only hold about 1000 past commands, but you can increase that - you can also add time/date to it so you can see when you ran each command!
This article describes ways through the command line and the graphical user interface of Debian 10 to keep your clock sync with the internet time servers. We have run the commands and procedures mentioned in this article on a Debian 10 Buster system.
Django is a free, open-source and high-level web framework used for developing Python Web Applications. In this tutorial, we will learn how to install Django and configure Nginx as a reverse proxy for Django on CentOS 8.
Every Linux system administrator is different, and we all have our own survival kits and secrets of survival in this job. Here's mine.
Create Users and Manage with useradd Command – Linux Complete Guide. In Linux and other Unix operating systems you can create multiple users and assign them to a group or multiple groups.
Ever wondered about the busy schedules of your favorite sysadmins? J?rg gives us a sneak peek into his work week!
In this tutorial, I will show you how to set up an OpenLDAP client using the Debian 10 Buster. Before using this guide, ensure that you have an OpenLDAP server installed on another node or server that the client can be connected to.
In this article we will be installing Arch Linux on ThinkPad X1 Carbon Gen 7 Laptop. This tutorial contains installation instructions, basic configuration as well as some post-install tuning of Arch Linux to get you started.
In this tutorial, we will show you how to install and use the UFW firewall system on a Linux VPS running Debian 9. Security is a very important thing to consider when you run your own server.
The tar command allows you to create and extract tar archives. It supports a vast range of compression programs such as gzip, bzip2, lzip, lzma, lzop, xz and compress. Learn how to use the tar command to extract .tar.xz or .txz archives.
This article shows you 5 ways to clear up disk space on a Debian 10 Buster system, mostly through the graphical interface so that even a beginner can master this skill.
The ls command is a feature-rich command-line utility. Find out eleven different ways to use it.
If you are working on a small to medium entreprise network, you probably have dozens of drives and printers that need to be shared. Besides the NFS protocol, there are plenty of other network protocols that can be used in order to share resources over a network. The CIFS, short for Common Internet File System, is a network filesystem protocol used to share resources among multiple hosts, sharing the same operating system or not. The CIFS, also known as the SMB protocol, is implemented by one popular tool : the Samba server.
If you come across the IMG file format in Linux, don't panic. Here is how you can easily convert an IMG file to ISO format in Linux.
If you work on the Linux command line long enough, you will eventually delete a file by accident. Enter Trash-CLI, the command line interface to the Linux trash can. In this Linux quick tip we will show you how to install and use this nifty little utility.
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