Install Nextcloud on Ubuntu 18.04 with Nginx – Google Cloud

How to install the OPNsense Firewall/Router distribution

How to Upgrade to Ubuntu 19.04 Disco Dingo from 18.10 Cosmic Cuttlefish

Destination Linux EP117 – Chris Were Digital

Best 20 Data Science Courses Available For Increasing Your Data Scientist Skills

Snek and a Balloon

Install Python Package

Loops in Python explained with examples

Newer isn't always better when performance is critical

Some years before I formalised my engineering education, I was working as an instrument technician on a seismic survey vessel mapping an area off West Africa. These ships map the geology under the sea bed as the first stage of marine oil exploration. In full production, a single vessel will generate a revenue of several hundred thousand dollars a day. So you need to have a good excuse for when the recording system fails and you leave a hole in the survey coverage, especially when you have an ex-military Norwegian built like the proverbial Viking as party manager.

The recording system was crashing; no error warnings, no smoke or fire. It just stopped recording. Repeatedly. The survey was looking like a cartoon Swiss cheese that had been attacked by hungry mice. What had changed? To save money the company had developed its own recording system, replacing Old Faithful with New Unreliable. I had my reservations when the prototype was tested in parallel with Old Faithful leading to my tearing out the connection between the two systems with under a minute to the start of a production line to go. I was younger then and could handle the excitement.

Minikube: 5 ways IT teams can use it

As far as tool names go, Minikube is a pretty good reflection of what it does: It takes the vast cloud-scale of Kubernetes and shrinks it down so that it fits on your laptop.

Don’t mistake that for a lack of power or functionality, though: You can do plenty with Minikube. And while developers, DevOps engineers, and the like might be the most likely to run it on a regular basis, IT leaders and the C-suite can use it, too. That’s part of the beauty.

“With just a few installation commands, anyone can have a fully functioning Kubernetes cluster, ready for learning or supporting development efforts,” says Chris Ciborowski, CEO and cofounder at Nebulaworks.

Ubuntu Podcast from the UK LoCo: S12E02 – Light Force

This week we have been upgrading disk drives (again) and playing Elite Dangerous. We discuss Mark’s homebrew Raspberry Pi based streaming box, bring you some command line love and go over your feedback.

It’s Season 12 Episode 02 of the Ubuntu Podcast! Alan Pope, Mark Johnson and Martin Wimpress are connected and speaking to your brain.

Altered, a sweet looking puzzle game where you're part of the puzzle is coming to Linux

Releasing sometime this Summer, Altered looks like a rather sweet take on the puzzle genre as you're a block that forms part of a puzzle.

The developer, Glitchheart, describes it as a "meditative" puzzle game that mixes difficult puzzles in with a "soothing atmosphere". The description made me chuckle a little, as you can make it seem as soothing as you want but if the puzzles really do get difficult you can't stop players getting frustrated. Still, solving puzzles doesn't need to make you sweat which is more the point here as it seems there's no set time limits and no dangers.

How To Navigate Directories Faster In Linux

An eBPF overview, part 2: Machine & bytecode

In our first article we introduced the eBPF VM, its intentional design limitations and how to interact with it from a userspace process. If you haven't yet read it, you should probably do so before continuing because starting directly with machine and bytecode specifics can be hard without a proper introduction. If in doubt, see the flowchart at the beginning of part 1.

The second part of this series takes a more in-depth look at the eBPF VM and program studied in the first part. Having this low level knowledge is not mandatory but can be a very useful foundation for the rest of the series where we examine higher level tools built on top of these mechanisms.

Blockchain 2.0 – An Introduction To Hyperledger Project (HLP) [Part 8]

Once a new technology platform reaches a threshold level of popularity in terms of active development and commercial interests, major global companies and smaller start-ups alike rush to catch a slice of the pie. Linux was one such platform back in the day. Once the ubiquity of its applications was realized individuals, firms, and institutions started displaying their interest in it and by 2000 the Linux foundation was formed.

Qt 5.13 Beta 2 Available For Testing Lottie Support, WebAssembly, glTF 2.0 For Qt 3D

Nearly one month after the release of the Qt 5.13 Beta 1, the second beta of this forthcoming tool-kit upgrade is now available.

Qt 5.13 is another big upgrade to Qt5 with featuring Lottie support for playable animations, glTF 2.0 import support for assets into Qt 3D, WebAssembly improvements, upgrades the Qt WebEngine against Chromium 73, adds fullscreen-shell-unstable-v1 to Qt Wayland, and removes the old Qt Canvas 3D module.

GStreamer Editing Services applies to the Google Season of Docs

Pitivi is based on the GStreamer Editing Services library. GES makes it easy to manage the timeline of a video project and export it to a new video file, and is carefully built to be reusable by other projects, not only Pitivi.

Since a few years ago, while not mentoring students for GSoC, we’ve been busy working on Pitivi 1.0. A large part of this was spent on fixing and improving the GES library. Time has come for the GES documentation to also be improved, to attract new users and contributors to the GStreamer ecosystem.

Bluestar Linux 5.0.7 Run Through

In this video, we look at Bluestar Linux 5.0.7.

Some Of The Best Open Source VPN Tools

With the help of VPN connections, You can establish private connections between two networks or points. VPNs are popular due to it’s security features.

In this post, We are going to write about the best open source VPN tools.

On The Block with Parity’s CEO: Snowden, open-source businesses, and surviving the hack

“We’re seeing young companies that have found business models on top of open source. They recognize it makes sense to collaborate on the foundational layers that are more infrastructure. And then find your competitive edge on a higher level,” she said. She also seemed to hint at profiting from an on-chain founder’s reward model similar to that of ZCash. “[If] you have a protocol that has some payment value mechanism built into it, it should be possible…to build some reward mechanism so that the open source protocol doesn’t suffer.”

btLr text direction in Writer, part 2

All this is available in LibreOffice master (towards 6.3), so you can try it out right now, if interested.

Can schools be agile?

Not surprisingly, a go-to resource I recommend to any school wanting to begin or accelerate this process is The Open Organization by Jim Whitehurst. Not only does the book provide a window into how educators can create more open, inclusive leadership structures—where mutual respect enables nimble decisions to be made per real-time data—but it does so in language easily adaptable to the rather strange lexicon that's second nature to educators. Open organization thinking provides pragmatic ways any organization can empower members to be more open: sharing ideas and resources, embracing a culture of collaborative participation as a top priority, developing an innovation mindset through rapid prototyping, valuing ideas based on merit rather than the rank of the person proposing them, and building a strong sense of community that's baked into the organization's DNA. Such an open organization crowd-sources ideas from both inside and outside its formal structure and creates the type of environment that enables localized, student-centered innovations to thrive.

Wine-Staging 4.6 Brings Big Performance Improvement For Multi-Threaded Games / Apps

Friday's release of Wine 4.6 was exciting in that it started merging the code for WineD3D Vulkan support, now supports a shared Wine-Mono, and other big ticket work. Wine-Staging 4.6 is now available as the latest experimental patches re-based atop the latest upstream Wine. This Wine-Staging update is quite exciting in its own right. 

GNU Hackers Meetings - News: Malfunction in ghm-planning (at) gnu.org

Due to a problem in the alias configuration, mails sent to ghm-planning before Sun Apr 14 8:00 CEST have been silently dropped.

FOSSASIA OpenTech Summit’19

Last month, I attended FOSSASIA’s annual conference which was held in Singapore. This conference was a collection of amazing, life-changing experiences. It was my first experience as a speaker and it taught me so much about the open-source culture. This summit took place from 14th March to 17th March in the beautiful city of Singapore. This was my second foreign trip as well. First one was to San Francisco as a part of the Student Startup Exposure Program.

My flight was scheduled for 12th March from Jaipur and had a layover at Chennai for 5 hours. I reached the Changi Airport in the early morning of 13th. This airport was quite scenic and is also ranked as the top airport in the world.

OpenSUSE's Spectre Mitigation Approach Is One Of The Reasons For Its Slower Performance

OpenSUSE defaults to IBRS for its Spectre Variant Two mitigations rather than the Retpolines approach and that is one of the reasons for the distribution's slower out-of-the-box performance compared to other Linux distributions. 

A Phoronix reader pointed out this opensuse-factory mailing list thread citing a "huge single-core performance loss" on a Lenovo laptop when using openSUSE. There's a ~21% performance loss in single-threaded performance around the Spectre Variant Two mitigations, which itself isn't surprising as we've shown time and time again about the performance costs of the Spectre/Meltdown mitigations.

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