opensource.com

Subscribe to opensource.com feed
Updated: 2 hours 13 min ago

An introduction to bpftrace for Linux

Mon, 08/19/2019 - 15:02

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.


read more

Moving files on Linux without mv

Mon, 08/19/2019 - 15:01

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:


read more

WebAssembly for speed and code reuse

Mon, 08/19/2019 - 15:00

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.


read more

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

Sat, 08/17/2019 - 15:00

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!


read more

Writing Kubernetes controllers the wrong way is still useful

Sat, 08/17/2019 - 15:00

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.


read more

How to encrypt files with gocryptfs on Linux

Fri, 08/16/2019 - 15:02

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.


read more

How to plan your next IT career move

Fri, 08/16/2019 - 15:01

Being part of technology-oriented communities has been an essential part of my career development. The first community that made a difference for me was focused on virtualization. Less than a year into my first career-related job, I met a group of friends who were significant contributors to this "vCommunity," and I found their enthusiasm to be contagious. That began our daily "nerd herd," where a handful of us met nearly every day for coffee before our shifts in tech support.


read more

Designing open audio hardware as DIY kits

Fri, 08/16/2019 - 15:00

Previously in this series about people who are developing audio technology in the open, I interviewed Juan Rios, developer and maintainer of Guayadeque and Sander Jansen, developer and maintainer of Goggles Music Manager. These conversations have broadened my thinking and helped me enjoy their software even more than before.


read more

Happy anniversary GNOME: What's your favorite version?

Thu, 08/15/2019 - 15:03

Today is the 22nd anniversary of the first GNOME release. To celebrate, we want to hear from you. What's your favorite GNOME version? And what does your favorite version say about you? Are you change-averse or are you a pioneer of new releases? Take our poll!


read more

How to record screencasts in GNOME 3

Thu, 08/15/2019 - 15:02

GNOME is a free and open source desktop environment used by most GNU/Linux distributions like Fedora, openSUSE, and Ubuntu. It's designed to "get things done with ease, comfort, and control."


read more

How to create a vanity Tor .onion web address

Thu, 08/15/2019 - 15:02

Tor is a powerful, open source network that enables anonymous and non-trackable (or difficult to track) browsing of the internet. It's able to achieve this because of users running Tor nodes, which serve as intentional detours between two otherwise direct paths. For instance, if you are in New Zealand and visit python.nz, instead of being routed next door to the data center running python.nz, your traffic might be routed to Pittsburgh and then Berlin and then Vanuatu and finally to python.nz.


read more

12 extensions for your GNOME desktop

Thu, 08/15/2019 - 15:01

The GNOME desktop is the default graphical user interface for most of the popular Linux distributions and some of the BSD and Solaris operating systems. Currently at version 3, GNOME provides a sleek user experience, and extensions are available for additional functionality.


read more

9 open source cloud native projects to consider

Wed, 08/14/2019 - 15:01

As the practice of developing applications with containers is getting more popular, cloud-native applications are also on the rise. By definition:

"Cloud-native technologies are used to develop applications built with services packaged in containers, deployed as microservices, and managed on elastic infrastructure through agile DevOps processes and continuous delivery workflows."


read more

4 misconceptions about ethics and bias in AI

Wed, 08/14/2019 - 15:00

At PyBay 2019 in August, I will continue a conversation I started at PyBay 2018 about the importance of ethics in the artificial intelligence (AI) we're developing, especially as it gains more and more influence in our everyday lives. In last year's keynote, I dug into how we're overlooking the essential role humans play in AI's future.


read more

How to install Python on Windows

Wed, 08/14/2019 - 15:00

So you want to learn to program? One of the most common languages to start with is Python, popular for its unique blend of object-oriented structure and simple syntax. Python is also an interpreted language, meaning you don't need to learn how to compile code into machine language: Python does that for you, allowing you to test your programs sometimes instantly and, in a way, while you write your code.


read more

Building a non-breaking breakpoint for Python debugging

Tue, 08/13/2019 - 15:12

This is the story of how our team at Rookout built non-breaking breakpoints for Python and some of the lessons we learned along the way. I'll be presenting all about the nuts and bolts of debugging in Python at PyBay 2019 in San Francisco this month. Let's dig in.

The heart of Python debugging: sys.set_trace

There are many Python debuggers out there. Some of the more popular include:


read more

To equip tomorrow's cybersecurity experts, we'll need an open approach

Tue, 08/13/2019 - 15:02

Today's world—marked by an increase of Internet-connected devices, digital assets, and information systems infrastructure—demands more cybersecurity professionals. Cybersecurity is the practice of defending these devices, assets, and systems against malicious cyberattacks from both internal and external entities. Often these cyberattacks are linked to cybercrimes, or crimes committed using a computer to generate profit or to affect the integrity, availability, and confidentiality of the data or system.


read more

A comprehensive guide to agile project management

Tue, 08/13/2019 - 15:01

With a focus on continuous improvements, agile project management upends the traditional linear way of developing products and services. Increasingly, organizations are adopting agile project management because it utilizes a series of shorter development cycles to deliver features and improve continually. This management style allows for rapid development, continuous integration (CI), and continuous delivery (CD).


read more

Apache Hive vs. Apache HBase: Which is the query performance champion?

Tue, 08/13/2019 - 15:00

It's super easy to get lost in the world of big data technologies. There are so many of them that it seems a day never passes without the advent of a new one. Still, such fast development is only half the trouble. The real problem is that it's difficult to understand the functionality and the intended use of the existing technologies.


read more

Cloud-native Java, open source security, and more industry trends

Tue, 08/13/2019 - 00:25

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.


read more

Pages