Showing headlines posted by bob

What is often a surprise to people is how massive open source is on mainframe. Ninety percent of mainframe customers leverage Linux on their mainframe, with broad support across all the top Linux distributions along with a growing number of community distributions. Key open source applications such as MongoDB, Hyperledger, Docker, and PostgreSQL thrive on the architecture and are actively used in production.

Recently, while experimenting with GTK and its Ruby bindings, I decided to write a tutorial introducing this functionality. In this post, we will create a simple ToDo application (something like what we created with Ruby on Rails) using the gtk3 gem (a.k.a. the GTK+ Ruby bindings). You can find the tutorial's code on GitHub. read more

Files is an essential application in the GNOME desktop. Many users interact with it daily to navigate, find and open files. Here are some changes in GNOME 3.28 users will see in the Fedora 28 release. Upcoming features in Files Each release cycle, GNOME community members improve and enhance the user experience with design and […]

There are certain Linux utilities that are aimed at performing a single task and hence offer very few or no command line options. Two such tools are which and whoami. In this tutorial, we will discuss these commands using some easy to understand examples.

Efforts to work around serious hardware flaws in Intel chips are ongoing.

The Eclipse IoT Developer Survey shows Linux (led by Raspbian) is the leading IoT platforms at 71.8 percent, with FreeRTOS pressing Windows for second place. AWS is the leading IoT cloud platform. The Eclipse Foundation’s Eclipse IoT Working Group has released the results of its IoT Developer Survey 2018, which surveyed 502 Eclipse developers between […]

Logging by nature is complex and in containerized environments there are new challenges that need to be addressed. In this article we will describe the current status of the Fluentd Ecosystem and how Fluent Bit (a Fluentd sub-project) is filling the gaps in cloud native environments.

Sometimes you might want to hide the history of commands you typed in the shell on Linux. This is e.g. useful when you are building a server image to roll out multiple virtual machines. The command shown below will work on all Linux Distributions (CentOS, Debian, Ubuntu, etc).

Python offers a unique set of tools and language features that help make your code more elegant, readable, and intuitive. By selecting the right tool for the right problem, your code will be easier to maintain. In this article, we'll examine three of those tools: magic methods, iterators and generators, and method magic.  read more

A system administrator can easily reset passwords for users who have forgotten theirs. But what happens if the system administrator forgets the root password, or leaves the company? This guide will show you how to reset a lost or forgotten root password on a Red Hat-compatible system, including Fedora and CentOS, in less than 5 minutes.

Do you remember the first time you built a role-playing game (RPG) character? It was exciting and full of possibility, and your imagination ran wild. If you're an avid gamer, it was probably a major milestone for you.

Cloud Foundry is large and complex, because that is what happens when we build software to automate tasks we've been doing manually. In this series, we are previewing the Cloud Foundry for Developers training course to help you better understand what Cloud Foundry is and how to use it.

Today, Mozilla is sharing an early preview of an experiment we are calling “Hubs by Mozilla”. Hubs is an immersive social experience that is delivered through the browser.

As discussed in Part 1 of this series, Stratis is a volume-managing filesystem (VMF) with functionality similar to ZFS and Btrfs. In designing Stratis, we studied the choices that developers of existing solutions made.

Configuring local storage is something desktop Linux users do very infrequently—maybe only once, during installation. Linux storage tech moves slowly, and many storage tools used 20 years ago are still used regularly today. But some things have improved since then. Why aren't people taking advantage of these new capabilities?

TConventional wisdom says you can’t run a database in a container because “Containers are stateless!” or “Databases are pointless without state!” However, this is not true any longer with Kubernetes 1.5, which includes the new StatefulSet API object (in older versions, StatefulSet was known as PetSet). With StatefulSets, Kubernetes makes it easier to run stateful workloads such as Couchbase Server, a NoSQL database.

A round up of news for weekend reading.

News briefs for April 27, 2018.

This week in Linux and open source headlines, Mark Hinkle of Node.js Foundation shares what he's excited for in regards to the platform this year and more. Read on and stay open-source-informed!

Dave wraps up the shell-script L33t generator: Last time, I talked about what's known informally as l33t-speak, a series of letter and letter-pair substitutions that marks the jargon of the hacker elite (or some subset of hacker elite, because I'm pretty sure that real computer security experts don't need to substitute vowels with digits to sound cool and hip).