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The Linux kernel: Top 5 innovations

Open Source - il y a 13 heures 45 min

The word innovation gets bandied about in the tech industry almost as much as revolution, so it can be difficult to differentiate hyperbole from something that’s actually exciting. The Linux kernel has been called innovative, but then again it’s also been called the biggest hack in modern computing, a monolith in a micro world.

Setting aside marketing and modeling, Linux is arguably the most popular kernel of the open source world, and it’s introduced some real game-changers over its nearly 30-year life span.


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Dive into the life and legacy of Alan Turing: 5 books and more

Open Source - il y a 13 heures 46 min

Recently, Bank of England Governor, Mark Carney, announced that Alan Turning would be the new face on the UK£ 50 note.


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The lifecycle of Linux kernel testing

Open Source - il y a 13 heures 47 min

In Continuous integration testing for the Linux kernel, I wrote about the Continuous Kernel Integration (CKI) project and its mission to change how kernel developers and maintainers work. This article is a deep dive into some of the more technical aspects of the project and how all the pieces fit together.


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How the Linux desktop has grown

Open Source - jeu, 08/22/2019 - 09:02

I first installed Linux in 1993. At that time, you really didn't have many options for installing the operating system. In those early days, many people simply copied a running image from someone else. Then someone had the neat idea to create a "distribution" of Linux that let you customize what software you wanted to install. That was the Softlanding Linux System (SLS) and my first introduction to Linux.


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How to move a file in Linux

Open Source - jeu, 08/22/2019 - 09:01

Moving files in Linux can seem relatively straightforward, but there are more options available than most realize. This article teaches beginners how to move files in the GUI and on the command line, but also explains what’s actually happening under the hood, and addresses command line options that many experience users have rarely explored.


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What piece of advice had the greatest impact on your career?

Open Source - jeu, 08/22/2019 - 09:00

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Build a distributed NoSQL database with Apache Cassandra

Open Source - mer, 08/21/2019 - 09:02

Recently, I got a rush request to get a three-node Apache Cassandra cluster with a replication factor of two working for a development job. I had little idea what that meant but needed to figure it out quickly—a typical day in a sysadmin's job.

Here's how to set up a basic three-node Cassandra cluster from scratch with some extra bits for replication and future node expansion.


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5 notable open source 3D printers

Open Source - mer, 08/21/2019 - 09:01

Open source hardware and 3D printers go together like, well, open source hardware and 3D printers. Not only are 3D printers used to create all sorts of open source hardware—there are also a huge number of 3D printers that have been certified as open source by the Open Source Hardware Association. That fact means that they are freely available to improve and build upon.


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Open Policy Agent: Cloud-native security and compliance

Open Source - mer, 08/21/2019 - 09:00

Every product or service has a unique way of handling policy and authorization: who-can-do-what and what-can-do-what. In the cloud-native world, authorization and policy are more complex than ever before. As the cloud-native ecosystem evolves, there’s a growing need for DevOps and DevSecOps teams to identify and address security and compliance issues earlier in development and deployment cycles. Businesses need to release software on the order of minutes (instead of months).


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Serverless on Kubernetes, diverse automation, and more industry trends

Open Source - mar, 08/20/2019 - 17:00

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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The cloud isn't killing open source software

Open Source - mar, 08/20/2019 - 09:02

Over the last few months, I participated in two keynote panels where people asked questions about open source licensing:

  • Do we need to redefine what open source means in the age of the cloud?
  • Are cloud vendors abusing open source?
  • Will open source, as we know it, survive?

Last year was the most eventful in my memory for the usually very conservative open source licensing space:


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A project manager's guide to Ansible

Open Source - mar, 08/20/2019 - 09:01

From application deployment to provisioning, Ansible is a powerful open source tool for automating routine IT tasks. It can help an organization's IT run smoothly, with core IT processes networked and maintained. Ansible is an advanced IT orchestration solution, and it can be deployed even over a large, complex network infrastructure.


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The infrastructure is code: A story of COBOL and Go

Open Source - mar, 08/20/2019 - 09:00

Old challenges are new again. In this week's Command Line Heroes podcast (Season 3, Episode 5), that thought comes with a twist of programming languages and platforms.


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A brief introduction to learning agility

Open Source - mar, 08/20/2019 - 09:00

I think everyone can agree that the workplace has changed dramatically in the last decade—or is in the process of changing, depending on where you're currently working. The landscape has evolved. Distributed leadership, project-based work models, and cross-functional solution building are commonplace. In essence, the world is going open.


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An introduction to bpftrace for Linux

Open Source - lun, 08/19/2019 - 09:02

Bpftrace is a new open source tracer for Linux for analyzing production performance problems and troubleshooting software. Its users and contributors include Netflix, Facebook, Red Hat, Shopify, and others, and it was created by Alastair Robertson, a talented UK-based developer who has won various coding competitions.


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Moving files on Linux without mv

Open Source - lun, 08/19/2019 - 09:01

The humble mv command is one of those useful tools you find on every POSIX box you encounter. Its job is clearly defined, and it does it well: Move a file from one place in a file system to another. But Linux is nothing if not flexible, and there are other options for moving files. Using different tools can provide small advantages that fit perfectly with a specific use case.

Before straying too far from mv, take a look at this command’s default results. First, create a directory and generate some files with permissions set to 777:


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WebAssembly for speed and code reuse

Open Source - lun, 08/19/2019 - 09:00

Imagine translating a non-web application, written in a high-level language, into a binary module ready for the web. This translation could be done without any change whatsoever to the non-web application's source code. A browser can download the newly translated module efficiently and execute the module in the sandbox. The executing web module can interact seamlessly with other web technologies—with JavaScript (JS) in particular. Welcome to WebAssembly.


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GNOME and KDE team up on the Linux desktop, docs for Nvidia GPUs open up, a powerful new way to scan for firmware vulnerabilities, and more news

Open Source - sam, 08/17/2019 - 09:00

In this edition of our open source news roundup, we take a look two new powerful data visualization tools, Nvidia open sourcing GPU documentation, exciting new tooling to secure firmware for self-driving cars, and more!


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Writing Kubernetes controllers the wrong way is still useful

Open Source - sam, 08/17/2019 - 09:00

When you try to shoehorn an idea, approach, or code into a situation that's not expecting it, you get surprising and fun results.

In his Lightning Talk at the 17th annual Southern California Linux Expo (SCaLE 17x), "Writing Kubernetes controllers 'the wrong way' is still useful," sysadmin Chris McEniry shares his experience with an out-of-cluster etcd-controller.


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How to encrypt files with gocryptfs on Linux

Open Source - ven, 08/16/2019 - 09:02

Gocryptfs is a Filesystem in Userspace (FUSE)-mounted file-level encryption program. FUSE-mounted means that the encrypted files are stored in a single directory tree that is mounted, like a USB key, using the FUSE interface. This allows any user to do the mount—you don't need to be root. Because gocryptfs encrypts at the file level, synchronization operations that copy your files can work efficiently on each file.


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