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The term "containers" is heavily overused. Also, depending on the context, it can mean different things to different people. Traditional Linux containers are really just ordinary processes on a Linux system. These groups of processes are isolated from other groups of processes using resource constraints (control groups [cgroups]), Linux security constraints (Unix permissions, capabilities, SELinux, AppArmor, seccomp, etc.), and namespaces (PID, network, mount, etc.)

VIDEO: Linux has run on mainframes for decades. Now IBM and partners are enabling users to access z/OS using a new open-source framework, Zowe.

The tmux utility, a terminal multiplexer, lets you treat your terminal as a multi-paned window into your system. You can arrange the configuration, run different processes in each, and generally make better use of your screen. We introduced some readers to this powerful tool in this earlier article. Here are some tips that will help […]

Part I of this Deep Dive on containers introduces the idea of kernel control groups, or cgroups, and the way you can isolate, limit and monitor selected userspace applications. Here, I dive a bit deeper and focus on the next step of process isolation—that is, through containers, and more specifically, the Linux Containers (LXC) framework.

Hubzilla is a free and open source platform for creating interconnected websites featuring a decentralized identity, communications, and permissions framework built using common web server technology. In this tutorial, I will explain how to install Hubzilla on Ubuntu 18.04 server.

There are plenty of great Raspberry Pi fan sites, tutorials, repositories, YouTube channels, and other resources on the web. Here are my top 10 favorite Raspberry Pi blogs, in no particular order.

If you’ve ever worked on a large codebase with a distributed development model, you’ve probably heard people say things like “Sue just sent a patch,” or “Rajiv is checking out the diff.” Maybe those terms were new to you and you wondered what they meant. Open source has had an impact here, as the main development model of large projects from Apache web server to the Linux kernel have been “patch-based” development projects throughout their lifetime. read more

Sensu is an open source infrastructure and application monitoring solution that monitors servers, services, and application health, and sends alerts and notifications with third-party integration. Written in Ruby, Sensu can use either RabbitMQ or Redis to handle messages. It uses Redis to store data.

Getting to where it is today was no small feat for the little project that Linus Torvalds announced to the world on August 25, 1991, with this newsgroup post: Hello everybody out there using minix - read more

Avnet’s “UltraZed-EV Starter Kit” for embedded vision features an UltraZed-EV module with a Zynq UltraScale+ MPSoC EV. The EV variant adds a 4K-ready H.264/H.265 codec and a more powerful FPGA to the quad -A53 SoC. Avnet has followed up on its Linux-driven UltraZed-EG SOM compute module with a new UltraZed-EV SOM version that moves to […]

In my recent article, A handy way to add free books to your eReader, I explained how to convert the plaintext indexes at Project Gutenberg to HTML and then EPUBs. But as one commenter noted, there is a problem in older indexes, where individual books are not always separated by an extra newline character. read more

There is growing demand for efficient networks with low latency and high bandwidth to support innovations such as autonomous cars, connected devices, machine learning, augmented and virtual reality, and real-time analytics. read more

This take on Linux is developed in Brazil and is based on the Debian stable branch. The default desktop (out of the box) is xfce 4.12.1, which helps to make DuZeru a serious contender in the lightweight Linux distribution arena.

The "Year of the Desktop" has been a perennial call to arms that's sunken into a joke that's way past its expiration date. We frequently talk about the "Year of the Desktop", but we don't really talk about how we would achieve that goal. What does the "Year of the Desktop" even look like?

Linux celebrates another birthday today—27 years! And we couldn't be more pleased to share in the excitement. Many of our readers are Linux users, fans, nerds... the list of adjectives describing them goes on. What would you call yourself? 

Raspberry Pi Trading has launched a $20 Power-over-Ethernet HAT board for the Raspberry Pi 3 Model B+ that delivers up to 15W and ships with a small fan. The Power-over-Ethernet HAT that was promised with the release of the Raspberry Pi 3 Model B+ SBC has arrived.

FriendlyElec has launched the smallest, most affordable Rockchip RK3399 based SBC yet. The NanoPi M4 has an RPi 3 form factor and 40-pin header plus dual MIPI-CSI, a USB Type-C, and a 24-pin header with 2x PCIe.

News briefs for August 24, 2018.

As containers become an almost ubiquitous method of packaging and deploying applications, the instances of malware have increased. Securing containers is now a top priority for DevOps engineers. Fortunately, a number of open source programs are available that scan containers and container images. Let’s look at five such tools. Anchore | Clair | Dagda | OpenSCAP | Sysdig Falco read more

If you use Linux for any amount of time, you'll soon learn there are many different ways to do the same thing. This includes installing applications on a Linux machine via the command line. I have been a Linux user for roughly 25 years, and time and time again I find myself going back to the command line to install my apps. read more