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Updated: 2 hours 47 min ago

3 new Java tools to try in 2021

Tuesday 23rd of March 2021 07:02:00 AM

Despite the popularity of Python, Go, and Node.js for implementing artificial intelligence and machine learning applications and serverless functions on Kubernetes, Java technologies still play a key role in developing enterprise applications.

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Affordable high-temperature 3D printers at home

Tuesday 23rd of March 2021 07:00:00 AM

3D printers have been around since the 1980s, but they didn't gain popular attention until they became open source, thanks to the RepRap project. RepRap stands for self-replicating rapid prototyper; it's a 3D printer that can largely print itself. The open source plans were released in 2004 and led to 3D printer costs dropping from hundreds of thousands of dollars to a few hundred dollars.

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5 everyday sysadmin tasks to automate with Ansible

Monday 22nd of March 2021 07:02:00 AM

If you hate performing repetitive tasks, then I have a proposition for you. Learn Ansible!

Ansible is a tool that will help you do your daily tasks easier and faster, so you can use your time in more effective ways, like learning new technology that matters. It's a great tool for sysadmins because it helps you achieve standardization and collaborate on daily activities, including:

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Why I use exa instead of ls on Linux

Monday 22nd of March 2021 07:01:00 AM

We live in a busy world and can save time and effort by using the ls command when we need to look for files and data. But without a lot of tweaking, the default ls output isn't quite soothing to the eyes. Why spend your time squinting at black and white text when you have an alternative in exa?

Exa is a modern-day replacement for the regular ls command, and it makes life easier. The tool is written in Rust, which is known for its parallelism and safety.

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6 WordPress plugins for restaurants and retailers

Monday 22nd of March 2021 07:00:00 AM

The pandemic changed how many people prefer to do business—probably permanently. Restaurants and other local retail establishments can no longer rely on walk-in trade, as they always have. Online ordering of food and other items has become the norm and the expectation. It is unlikely consumers will turn their backs on the convenience of e-commerce once the pandemic is over.

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New software service for the supply chain, fuzzing Java, and more

Monday 22nd of March 2021 07:00:00 AM

As part of my role as a principal communication strategist at an enterprise software company with an open source development model, I publish a regular update about open source community, market, and industry trends. Here are some of my and their favorite articles from that update.

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Create a countdown clock with a Raspberry Pi

Friday 19th of March 2021 07:01:00 AM

For 2021, Pi Day has come and gone, leaving fond memories and plenty of Raspberry Pi projects to try out. The days after any holiday can be hard when returning to work after high spirits and plenty of fun, and Pi Day is no exception. As we look into the face of the Ides of March, we can long for the joys of the previous, well, day. But fear no more, dear Pi Day celebrant! For today, we begin the long countdown to the next Pi Day!

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Managing deb Content in Foreman

Friday 19th of March 2021 07:00:00 AM

Foreman is a data center automation tool to deploy, configure, and patch hosts. It relies on Katello for content management, which in turn relies on Pulp to manage repositories. See Manage content using Pulp Debian for more information.

Pulp offers many plugins for different content types, including RPM packages, Ansible roles and collections, PyPI packages, and deb content. The latter is called the pulp_deb plugin.

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Practice using the Linux grep command

Thursday 18th of March 2021 07:03:00 AM

One of the classic Unix commands, developed way back in 1974 by Ken Thompson, is the Global Regular Expression Print (grep) command. It's so ubiquitous in computing that it's frequently used as a verb ("grepping through a file") and, depending on how geeky your audience, it fits nicely into real-world scenarios, too. (For example, "I'll have to grep my memory banks to recall that information.") In short, grep is a way to search through a file for a specific pattern of characters.

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Get started with an open source customer data platform

Thursday 18th of March 2021 07:01:00 AM

RudderStack is an open source, warehouse-first customer data pipeline. It collects and routes event stream (or clickstream) data and automatically builds your customer data lake on your data warehouse.

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"Going out of your way to be open": An important practice for executive leaders

Thursday 18th of March 2021 07:00:00 AM

Throughout our "Managing with Open Values" series, we've interviewed a number of managers and leaders who shared with us their experiences and practices. In this installment, I interviewed fellow Open Organization Ambassador Sam Knuth to discuss how he lets open values guide his approach to leading large teams.

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Track aircraft with a Raspberry Pi

Wednesday 17th of March 2021 07:02:00 AM

I live near a major airport, and I frequently hear aircraft flying over my house. I also have a curious preschooler, and I find myself answering questions like, "What's that?" and "Where's that plane going?" often. While a quick internet search could answer these questions, I wanted to see if I could answer them myself.

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Programming 101: Input and output with Java

Wednesday 17th of March 2021 07:01:00 AM

When you write a program, your application may need to read from and write to files stored on the user's computer. This is common in situations when you want to load or store configuration options, you need to create log files, or your user wants to save work for later. Every language handles this task a little differently. This article demonstrates how to handle data files with Java.

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DevOps tool K6’s journey to open source

Wednesday 17th of March 2021 07:00:00 AM

Robin Gustafsson, CEO of K6, an open source load-impact service, joined Ben Rometsch, CEO of Flagsmith, an open source feature-flagging product, on episode 8 of The Craft of Open Source podcast.

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My favorite open source project management tools

Wednesday 17th of March 2021 07:00:00 AM

Projects like building a satellite, developing a robot, or launching a new product are all expensive, involve different providers, and contain hard dependencies that must be tracked.

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How to write 'Hello World' in WebAssembly

Tuesday 16th of March 2021 07:01:00 AM

WebAssembly is a bytecode format that virtually every browser can compile to its host system's machine code. Alongside JavaScript and WebGL, WebAssembly fulfills the demand for porting applications for platform-independent use in the web browser. As a compilation target for C++ and Rust, WebAssembly enables web browsers to execute code at near-native speed.

When you talk about a WebAssembly, application, you must distinguish between three states:

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Get started with edge computing by programming embedded systems

Tuesday 16th of March 2021 07:00:00 AM

RTOS is an open source operating system for embedded devices developed by RT-Thread. It provides a standardized, friendly foundation for developers to program a variety of devices and includes a large number of useful libraries and toolkits to make the process easier.

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Learn how file input and output works in C

Monday 15th of March 2021 07:02:00 AM

If you want to learn input and output in C, start by looking at the stdio.h include file. As you might guess from the name, that file defines all the standard ("std") input and output ("io") functions.

The first stdio.h function that most people learn is the printf function to print formatted output. Or the puts function to print a simple string. Those are great functions to print information to the user, but if you want to do more than that, you'll need to explore other functions.

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6 things to know about using WebAssembly on Firefox

Monday 15th of March 2021 07:01:00 AM

WebAssembly is a portable execution format that has drawn a lot of interest due to its ability to execute applications in the browser at near-native speed. By its nature, WebAssembly has some special properties and limitations. However, by combining it with other technologies, completely new possibilities arise, especially related to gaming in the browser.

This article describes the concepts, possibilities, and limitations of running WebAssembly on Firefox.

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GitOps vs. DevOps: What's the difference?

Monday 15th of March 2021 07:00:00 AM

If you work with technology, you are probably familiar with DevOps. Although DevOps is quite hard to describe in a few words, these articles can give you more information:

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More in Tux Machines

Android Leftovers

Today in Techrights

today's howtos

  • Hans de Goede: Changing hidden/locked BIOS settings under Linux

    This all started with a Mele PCG09 before testing Linux on this I took a quick look under Windows and the device-manager there showed an exclamation mark next to a Realtek 8723BS bluetooth device, so BT did not work. Under Linux I quickly found out why, the device actually uses a Broadcom Wifi/BT chipset attached over SDIO/an UART for the Wifi resp. BT parts. The UART connected BT part was described in the ACPI tables with a HID (Hardware-ID) of "OBDA8723", not good. Now I could have easily fixed this with an extra initrd with DSDT-overrride but that did not feel right. There was an option in the BIOS which actually controls what HID gets advertised for the Wifi/BT named "WIFI" which was set to "RTL8723" which obviously is wrong, but that option was grayed out. So instead of going for the DSDT-override I really want to be able to change that BIOS option and set it to the right value. Some duckduckgo-ing found this blogpost on changing locked BIOS settings.

  • Test Day:2021-05-09 Kernel 5.12.2 on Fedora 34

    All logs report PASSED for each test done and uploaded as prompted at instruction page.

  • James Hunt: Can you handle an argument?

    This post explores some of the darker corners of command-line parsing that some may be unaware of. [...] No, I’m not questioning your debating skills, I’m referring to parsing command-lines! Parsing command-line option is something most programmers need to deal with at some point. Every language of note provides some sort of facility for handling command-line options. All a programmer needs to do is skim read the docs or grab the sample code, tweak to taste, et voila! But is it that simple? Do you really understand what is going on? I would suggest that most programmers really don’t think that much about it. Handling the parsing of command-line options is just something you bolt on to your codebase. And then you move onto the more interesting stuff. Yes, it really does tend to be that easy and everything just works… most of the time. Most? I hit an interesting issue recently which expanded in scope somewhat. It might raise an eyebrow for some or be a minor bomb-shell for others.

  • 10 Very Stupid Linux Commands [ Some Of Them Deadly ]

    If you are reading this page then you are like all of us a Linux fan, also you are using the command line every day and absolutely love Linux. But even in love and marriage there are things that make you just a little bit annoyed. Here in this article we are going to show you some of the most stupid Linux commands that a person can find.

China Is Launching A New Alternative To Google Summer of Code, Outreachy

The Institute of Software Chinese Academy of Sciences (ISCAS) in cooperation with the Chinese openEuler Linux distribution have been working on their own project akin to Google Summer of Code and Outreachy for paying university-aged students to become involved in open-source software development. "Summer 2021" as the initiative is simply called or "Summer 2021 of Open Source Promotion Plan" is providing university-aged students around the world funding by the Institute of Software Chinese Academy of Sciences to work on community open-source projects. It's just like Google Summer of Code but with offering different funding levels based upon the complexity of the project -- funding options are 12000 RMB, 9000 RMB, or 6000 RMB. That's roughly $932 to $1,865 USD for students to devote their summer to working on open-source. There are not any gender/nationality restrictions with this initative but students must be at least eighteen years old. Read more