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Bash, the Bourne Again Shell, it's the default shell on practically all major linux distributions: it is really powerful and can be also considered as a programming language, although not as sophisticated or feature-reach as python or other "proper" languages. In this tutorial we will see how to use bash arrays and perform fundamental operations on them.

How to mute Spotify ads on Arch Linux with a very simple and lightweight script called Spotify-AdKiller.

The company has joined OIN, giving up its ability to sue users of Linux for infringing any of 90,000 or so patents it holds. Not everyone in the open source community believes in its good intentions.

Today we launched the first article in our LISA18 speaker series, An introduction to Ansible Operators in Kubernetes by Michael Hrivnak. Check back for more articles from LISA18 speakers leading up to the event, which will be held October 29-31 in Nashville, Tennessee.

Whether you want to access the Internet safely and securely while connected on an untrusty public Wi-Fi network, bypass Geo-restricted content or allow your coworkers to connect securely to your company network when working remotely, using a VPN is the best solution. VPN allows you to connect to remote VPN servers, making your connection encrypted and secure and surf the web anonymously by keeping your traffic data private. This tutorial will walk you through the process of setting up your own VPN server by installing and configuring OpenVPN.

For years, Ansible has been a go-to choice for infrastructure automation. As Kubernetes adoption has skyrocketed, Ansible has continued to shine in the emerging container orchestration ecosystem. read more

Linux containers are processes with certain isolation features provided by a Linux kernel — including filesystem, process, and network isolation. Containers help with portability — applications can be distributed in container images along with their dependencies, and run on virtually any Linux system with a container runtime. Although container technologies exist for a very long time, […]

The Webmin console is your answer to on-the-fly management of Linux as an administrator. You can use any web browser to setup user accounts, Apache, DNS, file sharing, and much more. In this article, we will describe a step-by-step installation of Webmin on your Ubuntu system.

After months of user testing in developer and beta channels, the Crostini project at Google finally delivered the goods, Linux apps for most users of Chromebooks in the stable channel—definitely worth the wait...

RabbitMQ is the message-queueing software that offers support for sending and receiving messages between distributed systems, applications, and services. In this tutorial, I will show you step-by-step how to set up the RabbitMQ Cluster on a CentOS 7 Server.

We will show you how to change user password in Linux. Changing user passwords in Linux could be one of the most common tasks you will have to perform while you are administering a multi-user server.

Keeping the system up to date is an every day task for a sysadmin, as well as a desktop user. By applying the latest (stable) available software on the system we can take advantage of the latest features, and will be more protected from security issues and hopefully suffer less from bugs. To update the system you will need configured yum repositories that act as the source of the updated software.

Docker Compose is a tool that allows you to define and run multi-container Docker applications.

With Compose, you define the application’s services, networks and volumes in a single YAML file, then spin your application with a single command.

Of the many things the go executable can do, most people know only go run and go build. And, of the many packages in the standard Go library, most people know only the fmt package. This cheat sheet will list many uses of the go executable and the most important packages in the Go standard library. Download the Go command and packages cheat sheet read more

Reverse proxy is a kind of a proxy that takes http or https request & transfers/distributes them to one or more backend servers. In this tutorial, we will be using three instances of Apache tomcat server & will than use apache reverse proxy as load balancer to distribute & redirect the requests to these three tomcat servers.

In whatever imaginative way you decide to use Kafka, one thing is certain — You won’t be using it as a single instance. It is not meant to be used that way, and even if your distributed app needs only one instance (broker) for now, it will eventually grow and you need to make sure that Kafka can keep up. Docker-compose is the perfect partner for this kind of scalability.

Our writer community grows each month as new, interesting folks write for us and join in on the fun of sharing their expertise and experiences in open source technology. So, it's no surprise that they are brimming with fascinating information. It's just asking the right question to release it. Recently, I asked: What programming languages do you use at work, and which ones do you use on the weekend? read more

Doc Searls and Katherine Druckman talk to Erich Andersen, Corporate Vice President, Deputy General Counsel at Microsoft and Keith Bergelt, CEO of Open Invention Network about Microsoft's recently announced membership with the Open Invention Network patent community.

When I was starting in the world of amateur digital photography, I learned about 2 software programs that everybody was using: Adobe Photoshop and Adobe Lightroom. In the Free and Open Source world, there are 2 amazing alternatives: GIMP and Darktable. For many people, getting started can be daunting. Therefore I like to present the absolute basics of photo editing with Darktable.

Multiple vulnerabilities have been discovered in PHP, the most severe of which could allow an attacker to execute arbitrary code. Systems affected: PHP 7.2 prior to 7.2.11, PHP 7.1 prior to 7.1.23, PHP 7.0 prior to 7.0.32, and PHP 5.6 prior to 5.6.38