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Whenever I start learning a new programming language, I focus on defining variables, writing a statement, and evaluating expressions. Once I have a general understanding of those concepts, I can usually figure out the rest on my own. Most programming languages have some similarities, so once you know one programming language, learning the next one is a matter of figuring out the unique details and recognizing the differences. read more

FreeDOS, the open source implementation of DOS, provides a lightweight operating system for running legacy applications on modern hardware (or in an emulator) and for updating hardware vendor fails with a Linux-compatible firmware flasher. Getting familiar with FreeDOS is not only a fun throwback to the computing days of the past, it's an investment into gaining useful computing skills. In this article, I'll look at some of the essential commands you need to know to work on a FreeDOS system.

IEI’s fanless, rugged “DRPC-330-A7K” embedded computer runs Ubuntu on a Marvell Armada 7040 and offers 10GbE SFP+, 2x GbE, 4x isolated serial, 2x USB, and 3x M.2 connections. IEI announced a networking-oriented embedded computer called the DRPC-330-A7K that runs Ubuntu 18.10 on Marvell’s Armada 7040 (88F7040). The DIN-rail form-factor system has a -20 to 60°C […]

Version control is an inseparable part of software developers' daily lives. It's hard to imagine any team developing software without using a version control tool. It's equally difficult to envision any developer who hasn't worked with (or at least heard of) Git. In the 2018 Stackoverflow Developer Survey, 87.2% of the 74,298 participants use Git for version control.

Advantech’s rugged “UNO-238” embedded PC runs Linux or Win 10 on Intel’s 8th Gen UE-series and offers up to 32GB of easily swappable DDR4 plus 32GB eMMC, 2x GbE, 4x USB 3.2 Gen2, 2x serial, 2x M.2, and DP and HDMI. Advantech announced a fanless, Whiskey Lake based IoT edge computer called the UNO-238 that […]

Rare diseases kill millions, but because they don't make the headlines that coronavirus does, they're often ignored. Now, the Linux Foundation and the OpenTreatments Foundation are joining forces to create open-source gene therapies for rare genetic diseases.

DFRobot’s $30, 66 x 55mm “Compute Module 4 IoT Router Carrier Board Mini” extends the Raspberry Pi CM4 with 2x GbE, 2x Type-C, microSD, and 26-pin GPIO. Earlier this month, we saw the first dual-Ethernet carrier boards for the Raspberry Pi Compute Module 4 in Seeed’s Dual Gigabit Ethernet Carrier Board (2x GbE) and Mcuzone […]

RMS has been kicked off the GCC Steering Committee while FSF management team members are resigning

Finding your way around a version control system can be tricky. It can be massively overwhelming for a newbie, but being well-versed with the terminology and the basics of a version control system like Git is one of the baby steps to start contributing to open source. Being familiar with Git can also help you out of sticky situations in your open source journey. Git is powerful and makes you feel in control—there is not a single way in which you cannot revert to a working version. read more

There is no room for harassment, bullying, or other forms of abuse in Fedora. We take our Code of Conduct seriously in order to ensure a welcoming community.

Two common tasks that new programmers need to learn are how to read from and write to files stored on a computer. Some examples are when data and configuration files created in one application need to be read by another application, or when a third application needs to write info, warnings, and errors to a log file or to save its results for someone else to use. read more

When debugging code, you're often faced with figuring out when a variable changes. Without any advanced tools, you have the option of using print statements to announce the variables when you expect them to change. However, this is a very ineffective way because the variables could change in many places, and constantly printing them to a terminal is noisy, while printing them to a log file becomes unwieldy. read more

Main power of tcpdump packet sniffing tool comes from its flexible packet filtering rules and versatile protocol dissection capability. As you may know, only the sky is the limit when it comes to packet-level monitoring with tcpdump. This post provides a comprehensive tcpdump cheat sheet with detailed examples.

Diodes Delight has launched a $39 “Piunora” carrier for the Raspberry Pi CM4 with Arduino, ADC, and Qwiic expansion, and Mirko Electronics is prepping a “MirkoPC” carrier with dual HDMI and a DAC. Lately, it seems, most of the interesting embedded Linux news has been about carrier boards for the Raspberry Pi Compute Module 4. […]

If you use Git every day, you probably make a lot of commits. If you're using Git every day in a project with other people, it's safe to assume that everyone is making lots of commits. Every day. And this means you're aware of how disorienting a Git log can become, with a seemingly eternal scroll of changes and no sign of what's been changed. So how do you find out what file changed in a specific commit? It's easier than you think.

I recently started writing a game where you build words using letter tiles. To create the game, I needed to know the frequency of letters across regular words in the English language, so I could present a useful set of letter tiles. Letter frequency is discussed in various places, including on Wikipedia, but I wanted to calculate the letter frequency myself.

In the 21st century, we tend to take data storage for granted. We have lots of it, it's relatively affordable, and there are many different types of storage available. No matter how much cloud storage space you're given for free, there's nothing quite like having a physical hard drive for your really important (or really big, when you live on a slow network) data. However, few hard drives are sold right off the shelf, ready to use—in an ideal configuration, at least. read more

Search giant insists it's necessary, iTitan didn't have anything to say Android and iOS phones transmit telemetry back to Google and Apple, even when users have chosen not to send analytics data.…

In this edition of our open source news roundup, IBM's Call for Code aims to solve climate change, the Linux Foundation launches a new signing service, and more. read more

The hidden cost of multi-cloud, and how full open source reduces lock-in The X.Org Foundation has successfully completed a migration from Google Kubernetes Engine (GKE) to Packet, which it reckoned "should save us around $30 per day."…