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Updated: 1 week 1 day ago

Start using systemd as a troubleshooting tool

Mon, 05/11/2020 - 15:00

No one would really consider systemd to be a troubleshooting tool, but when I encountered a problem on my webserver, my growing knowledge of systemd and some of its features helped me locate and circumvent the problem.


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Open source underpins coronavirus IoT and robotics solutions

Sun, 05/10/2020 - 15:00

The tech sector is quietly having a boom during the COVID-19 pandemic. Open source developers are getting involved with many aspects of the fight against the coronavirus, using Python to visualize its spread and helping to repurpose data acquisition systems to perform contact tracing.


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The success of virtual conferences, Retropie comes to Raspberry Pi 4, and other open source news

Sat, 05/09/2020 - 15:18

In this week’s edition of our open source news roundup, we see the success of virtual conferences, continued impact of open source on COVID-19, Retropie adds support for Raspberry Pi 4, and more open source news.


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5 ways to split your Linux terminal

Fri, 05/08/2020 - 15:03

Is there anything better than a warmly flickering Linux terminal?

Sure there is: two warmly flickering Linux terminals. In fact, the more, the better.


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Getting started with FreeBSD as a desktop operating system

Fri, 05/08/2020 - 15:02

FreeBSD is a great operating system, but, by design, it does not come with a desktop environment. Without installing additional software from FreeBSD's ports and packages collection, FreeBSD is a command-line only experience. The screenshot below shows what logging into FreeBSD 12.1 looks like when every one of the "optional system components" is selected during installation.


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A guide to setting up your Open Source Program Office (OSPO) for success

Fri, 05/08/2020 - 15:00

Companies create Open Source Program Offices (OSPO) to manage their relationship with the open source ecosystems they depend on. By understanding the company's open source ecosystem, an OSPO is able to maximize the company's return on investment and reduce the risks of consuming, contributing to, and releasing open source software. Additionally, since the company depends on its open source ecosystem, ensuring its health and sustainability shall ensure the company's health, sustainable growth, and evolution.


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The perfect combo with Prometheus and Grafana, and more industry trends

Fri, 05/08/2020 - 00:35

As part of my role as a senior product marketing manager at an enterprise software company with an open source development model, I publish a regular update about open source community, market, and industry trends for product marketers, managers, and other influencers. Here are five of my and their favorite articles from that update.


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9 kubectl commands sysadmins need to know

Thu, 05/07/2020 - 15:03

Kubernetes is the dominant technology for infrastructure today, and that means sysadmins need to be familiar with administering it. I have been managing Kubernetes clusters every day for years now, and I picked up a few tricks that I highly recommend for others looking to simplify their admin experience.


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Using the systemctl command to manage systemd units

Thu, 05/07/2020 - 15:02

In the first two articles in this series, I explored the Linux systemd startup sequence. In the first article, I looked at systemd's functions and architecture and the controversy around its role as a replacement for the old SystemV init program and startup scripts. And in the second article, I examined two important systemd tools, systemctl and journalctl, and explained how to switch from one target to another and to change the default target.


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Beginner guides, Windows, networking, and more Ansible news

Thu, 05/07/2020 - 15:00

We've mentioned it before in Ansible around the web, but there are big changes afoot with Ansible itself and the move to collections. To keep the developer community updated with the rate of progress, our own Greg DeKoenigsberg has started a newsletter, The Bullhorn. You should check it out!


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6 open source alternatives to Wunderlist

Wed, 05/06/2020 - 15:03

Wunderlist is an app for lists, loved by many, but gone for good as of May 6, 2020. The website encourages existing users to download and use Microsoft To Do in its place. That's tempting because it makes it easy to import all of those lists you've made over the years. Then again, maybe it's a chance to Marie Kondo those lists and pare things down. Do you really need 30 lists? (Apparently, I've decided that I do, so I won't judge.)


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Speed up administration of Kubernetes clusters with k9s

Wed, 05/06/2020 - 15:02

Usually, my articles about Kubernetes administration are full of kubectl commands for administration for your clusters. Recently, however, someone pointed me to the k9s project for a fast way to review and resolve day-to-day issues in Kubernetes. It's been a huge improvement to my workflow and I'll show you how to get started in this tutorial. 


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Customizing my open source PHP framework for web development

Wed, 05/06/2020 - 15:01

PHP Codeigniter is an open source framework providing business applications with the easy-to-use PHP programming language and powerful tools for coding. It also provides business intelligence, server monitoring, development, and application integration facilities. It's a relatively quiet project that you don't hear much about, but it's got a lot going for it that many developers new to it find surprising and refreshing.


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Customizing my open source PHP framework for web development

Wed, 05/06/2020 - 15:01

PHP Codeignitor is an open source integrated development environment (IDE) providing business applications with the easy-to-use PHP programming language and powerful tools for coding. It also provides business intelligence, server monitoring, development, and application integration facilities. It's a relatively quiet project that you don't hear much about, but it's got a lot going for it that many developers new to it find surprising and refreshing.


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Managing Git projects with submodules and subtrees

Wed, 05/06/2020 - 15:00

If you are into open source development, you have probably worked with Git to manage source code. You might have come across projects with numerous dependencies and/or sub-projects. How do you manage them?

For an open source organization, it can be tricky to achieve single-source documentation and dependency management for the community and the product. The documentation and project often end up fragmented and redundant, which makes them difficult to maintain.


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11 DevOps lessons from My Little Pony

Tue, 05/05/2020 - 15:02

In 2010, the My Little Pony franchise was rebooted with the animated show My Little Pony: Friendship is Magic. The combination of accessibility to children with the sophisticated themes the show tackled garnered a following that cut across ages. I was swept up in the wave and discovered there is a lot to learn about DevOps from the show.


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8 open source video games to play

Tue, 05/05/2020 - 15:01

Video games are a big business. That's great for the industry's longevity—not to mention for all the people working in programming and graphics. But it can take a lot of work, time, and money to keep up with all the latest gaming crazes. If you feel like playing a few quick rounds of a video game without investing in a new console or game franchise, then you'll be happy to know that there are plenty of open source combat games you can download, play, share, and even modify (if you're inclined to programming) for free.


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Analyzing data science code with R and Emacs

Tue, 05/05/2020 - 15:00

Way back in 2012, Harvard Business Review published an article that proclaimed "data scientist" to be the sexiest job of the 21st century. Interest in data science has exploded since then. Many great open source projects, such as Python and the R language for statistical computing, have facilitated the rapid developments in how we analyze data.


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Understanding systemd at startup on Linux

Mon, 05/04/2020 - 15:03

In Learning to love systemd, the first article in this series, I looked at systemd's functions and architecture and the controversy around its role as a replacement for the old SystemV init program and startup scripts. In this second article, I'll start exploring the files and tools that manage the Linux startup sequence. I'll explain the systemd startup sequence, how to change the default startup target (runlevel in SystemV terms), and how to manually switch to a different target without going through a reboot.


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Use this Python script to encode binary in Base94

Mon, 05/04/2020 - 15:02

Humans transfer information in many different ways. On the internet, the primary format is text, which is how you're reading this article. However, there is other data on the internet, such as images and sound files and so on. It might seem easy to post an image online or attach a document to an email, until you realize that HTTP/1.1 and SMTP are text-based protocols. Data transferred over such protocols must be represented as a subset of ASCII text (specifically, characters 33 to 126).


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