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SciFi

Stellarium 0.20.3 Released with Tons of Changes [Ubuntu PPA]

Filed under
Software
Sci/Tech
SciFi

Free-software planetarium Stellarium 0.20.3 was released a day ago with numerous changes. Here’s how to install it in Ubuntu 18.04, Ubuntu 20.04 via PPA.

Stellarium 0.20.3 fixed nutation and, with it, season beginning times, included many changes in AstroCalc tool, Oculars and Satellites plugins, and updated DSO catalog.

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Help with COVID-19 research using Folding@home on Linux

Filed under
GNU
Linux
SciFi

Right now, every human on the planet is affected in some way by the COVID-19 pandemic. Many people are looking for ways they can help. People are making masks and starting projects to invent or provide critical equipment. One thing you can do is donate what you have. If you're like me, you have computing hardware sitting idle much of the time—that's a resource that can contribute to finding a solution to the COVID-19 pandemic, as well as things like Alzheimer's disease and cancer.

[...]

Folding@home started in 2000 with volunteers donating CPU and GPU time on computers that would otherwise be idle to work on things like creating antibiotics and curing cancer, and since then has made many important contributions. Currently, Folding@home makes more than 100 petaflops of processing power available to researchers. One current high-priority project is the research being done to find ways to combat the COVID-19 pandemic.

The Folding@home software can be installed on almost any computer. There are client downloads for Windows, macOS, and Linux. There is a VMware appliance. There are also projects to get the client running on Android and a Chrome plugin. There's even a Docker image.

In this article, we’ll look at the Linux install and configuration, and we’ll look at a headless install for CentOS 7 that you can use to build multiple VMs.

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9 open source robotics projects

Filed under
OSS
SciFi

Open source isn't just changing the way we interact with the world, it's changing the way the world interacts back with us. Case in point: open source robotics.

Robots are playing an increasing role in our world, and while we perhaps haven't reached the utopian future with robotic housekeepers imagined for us in the Jetsons, robotics are making advances in fields that fifty years ago would have been completely unimaginable.

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Introducing MrRobot, Ubuntu Touch App Enabled Robotics Powered by Raspberry Pi

Filed under
Linux
SciFi

Today we have the great pleasure of introducing you to a brand-new project developed during the Ubuntu ShenZhen hackathon by Joseph Wang. It is called MrRobot, just like the TV show we taked about in a couple of articles right here on Softpedia.

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Linux-based bipedal robot endures kicks and dodgeball attacks

Filed under
Linux
SciFi

OSU demonstrated its speedy, bipedal ATRIAS robot withstanding a barrage of kicks and dodgeballs. ATRIAS runs on ROS and a real-time Xenomai Linux kernel.

Researchers at Oregon State University’s Dynamic Robotics Laboratory have demonstrated their Linux-driven ATRIAS robot withstanding a considerable beating while keeping its cool. OSU recently posted videos of its unusual torture testing procedures, which include human kicks and a barrage of dodgeballs, as reported by IEEE Spectrum. Eventually, the human-sized bipedal robot is knocked from its feet, but not before it absorbs a lot of hits. The robot protects itself with strategies such as side stepping and hopping on one foot

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Linux for Astronomers

Filed under
GNU
Linux
SciFi

I've looked at specialty distributions that were created for engineers and biologists in previous articles, but these aren't the only scientific disciplines that have their own distributions. So in this article, I introduce a distribution created specifically for astronomers, called Distro Astro. This distribution bundles together astronomy software to help users with tasks like running observatories or planetariums, doing professional research or outreach.

From the very first moment of booting up Distro Astro, you will notice that this distribution is aimed at astronomers. The look and feel of items, from the boot splash screen to wallpapers and screensavers, have all been given an astronomical theme. Even the default wallpaper is a slideshow of Hubble images.

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Imitate Fake Hollywood Terminal Hacking Melodrama with This Amazing App for Ubuntu

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GNU
Linux
Movies
SciFi
Humor

We all know that Hollywood movies are the worst place to see some accurate depiction of anything from real life and that includes computer terminals. Well, there is a solution for that now and we can only hope that some misguided producer will see the new "hollywood" package made for this exact purpose.

Hollywood movie producers invest a lot of time and money in custom interfaces and GUIs that don't really do anything, but they think they’re nice and interesting on film. Most of the time, someone is hacking away by typing frenetically while windows with crazy stuff open and close. This is why this kind of image is now seared into the public's consciousness and hacking looks more exciting than in real life. It isn't.

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NASA’s R2 bot to receive legs via SpaceX

Filed under
Linux
SciFi

The 330-pound Robonaut 2 measures 3 feet, 4 inches tall from the waist, and is equipped with more than 350 sensors. Its stomach-located brain runs Linux on 38 PowerPC-based processors. The robot is operated remotely by humans, using the Robonaut Tele-operation System (RTS). This telerobotics system requires a ground- or space-based user to wear a 3D visor, vest, and pressure-sensitive gloves. (For more on the R2, see our original coverage.)

According to the OSRF, the R2 team also uses the open source Gazebo simulator to simulate R2 for development and testing. NASA and ROS.org released their Gazebo models of the R2 and the ISS as open source.

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Top 10 tech tricks we're sick of seeing in movies

Filed under
Movies
Sci/Tech
SciFi

cnet.com: Think how awesome it was the first time you saw a lightsaber in action. Or how your mind was officially shredded when Neo mastered the Matrix. Technology in movies is cool. But for every thrilling example of cool-ass tech, Hollywood seems to produce a tired, dated cliche.

Michael Crichton, million-selling science-fiction author, dies at 66

Filed under
SciFi
Obits

latimes.com: Best-selling author Michael Crichton, who wrote such novels as "The Andromeda Strain" and "Jurassic Park," and created the popular TV drama "ER," has died at 66, his family said today.

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Audiocasts/Shows: Open Source Security Podcast, Linux Action News, and SMLR

Review: Artix Linux in 2021

Artix Linux is a fork (or continuation as an autonomous project) of the Arch-OpenRC and Manjaro-OpenRC projects. Artix Linux offers a lightweight, rolling-release operating system featuring alternative init software options, including OpenRC, runit, and s6. The distribution is available in many editions, including Base, Cinnamon, LXDE, LXQt, MATE, KDE Plasma and Xfce. With all of the desktop options, combined with the available init choices, there are 21 editions, not including community spins from which to choose. All editions appear to be built for 64-bit (x86_64) machines. Picking randomly, I selected Artix's Plasma edition featuring the runit init software. The download for this edition is is 1.3GB. Browsing the other editions it looks like most flavours are about 1.1GB to 1.3GB in size, though the minimal Base edition is a compact 618MB. The project's live media boots to the KDE Plasma desktop. On the desktop we find multiple documentation and README icons. There is also an icon for launching the system installer. The default layout places a panel at bottom of the screen where we can find the application menu and system tray. The default wallpaper is a soft blue while the theme for windows and menus is dark with high contrast fonts. [...] Artix Linux is one of those distributions I really enjoy using and yet struggle to review in a meaningful way because it doesn't really go out of its way to introduce new or exciting features and everything works smoothly. The distribution is wonderfully easy to install, offers top-notch performance, and is unusually light on resources. Artix is somewhat minimal, but still ships enough software to be immediately useful right out of the gate. We can browse the web, install packages, view files, and play videos. Meanwhile the application menu isn't cluttered with a lot of extras. The developers clearly expect us to install the functionality we need, while doing a really good job of providing enough for the desktop environment to feel base-line useful right from the start. Artix does a nice job of balancing performance and functionality while also juggling ease of use against not getting in the way. There is a little documentation, but no initial welcome screen or configuration wizards that might distract the user. The one piece I felt was missing was a graphical package manager which would have made it easier to build the extra functionality I wanted on top of the base distribution. However, that one piece aside, I felt as though Artix was really well designed and put together, at lease for someone like me. It's not a distribution geared toward beginners, it's not a "first distro". It is a bit minimal and requires command line knowledge. However, for someone with a little experience with Linux, for someone who doesn't mind the occasional trip to the command line or installing new applications as needed, then Artix provides an excellent experience. It's fast, light, looks (in my opinion) great with the default theme, and elegantly walks the line between minimalism and having enough applications ready to go out of the box to be immediately useful. I'm unusually impressed with how smooth and trouble-free my experience was with this distribution and the fact it offers such a range of desktop and init diversity is all the more appealing. Read more

Alpine Linux Review: Ultimate Distro for Power Users

Alpine Linux is gathering a lot of attention because of its super-small size and focus on security. However, Alpine is different from some of the other lightweight distros we covered on FOSSLinux. It isn’t your typical desktop distribution as it is terminal-based like Arch and is marketed as a “general purpose distro.” It is currently widely adopted as a Docker container thanks to its ultra-small footprint. However, it can be used for all sorts of Linux deployments that benefit from small, resource-efficient Linux distros. Now, that statement might feel too generic. But don’t worry, as we have put together an in-depth and comprehensive review of Alpine Linux, giving you a detailed look at what it has under the hood and how to use it. As such, by the end, you should have a clear understanding of whether you should consider Alpine Linux as your next Linux distro. So without further ado, let’s dive in. Read more

Programming Leftovers

  • How to manipulate strings in bash

    Without explicit support for variable types, all bash variables are by default treated as character strings. Therefore more often than not, you need to manipulate string variables in various fashions while working on your bash script. Unless you are well-versed in this department, you may end up constantly coming back to Google and searching for tips and examples to handle your specific use case. In the spirit of saving your time and thus boosting your productivity in shell scripting, I compile in this tutorial a comprehensive list of useful string manipulation tips for bash scripting. Where possible I will try to use bash's built-in mechanisms (e.g., parameter expansion) to manipulate strings instead of invoking external tools such as awk, sed or grep. If you find any missing tips, feel free to suggest it in the comment. I will be happy to incorporate it in the article.

  • Python Generators

    Python generators are very powerful for handling operations which require large amount of memory.

  • We got lucky

    If you’re having enough production incidents to be able to evaluate your preparation, you’re probably either unlucky or unprepared ;) If you have infrequent incidents you may be well prepared but it’s hard to tell. Chaos engineering experiments are a great way to test your preparation, and practice incident response in a less stressful context. It may seem like a huge leap from your current level of preparation to running automated chaos monkeys in production, but you don’t need to go straight there. Why not start with practice drills? You could have a game host who comes up with a failure scenario. You can work up to chaos in production.

  • React Testing Library – Tutorial with JavaScript Code Examples

    This post will help you to learn what React Testing Library is, and how you can use it to test your React application. This tutorial will assume you already know some basic JavaScript and understand the basics of how React works. React Testing Library is a testing utility tool that's built to test the actual DOM tree rendered by React on the browser. The goal of the library is to help you write tests that resembles how a user would use your application, so that you'll have more confidence that your application work as intended when a real user do use it.

  • Why I Moved From Ops to DevOps (and why you might want to)