Showing headlines posted by bob

Python follows the EAFP (Easier to Ask Forgiveness than Permission) rather than the LBYL (Look Before You Leap) philosophy. The Python philosophy of EAFP is somewhat linked to its "duck typing" style of coding. read more

Back to the time when tape was king 2020 marks 60 years since ALGOL 60 laid the groundwork for a multitude of computer languages.…

If you've ever visited a project on GitHub (for instance) with the intention of understanding how it fits into a larger system, you'll recognise the sigh of relief you experience when you find a diagram or two on (or easily reached from) the initial landing page. This is an article about the importance of architecture and specifically about the importance of diagrams. read more

Fedora Silverblue provides a useful workstation build on an immutable operating system. In “What is Silverblue?“, you learned about the benefits that an immutable OS provides. But what pieces go into making it? This article examines some of the technology that powers Silverblue. The filesystem Fedora Workstation users may find the idea of an immutable […]

Apache CouchDB is a free, open-source and document-oriented NoSQL database that uses JSON to store the data. In this tutorial, we will explain how to install Apache CouchDB on CentOS 8.

The leading private Infrastructure-as-a-Service cloud has just released its 21st version.

And you thought this was purely a NoSQL release this week? MariaDB, which counts Deutsche Bank, Nasdaq and telecoms giant Verizon among its users, has launched a DBaaS rendition of its relational database, adding options to configure and customise it.…

Nvidia’s $399 Jetson Xavier NX Developer Kit runs Linux on the hexa-core Jetson Xavier NX with up to 21 TOPS AI performance. The company also announced cloud native support for the NX and other Jetsons, thereby enabling container apps. Last November, when Nvidia unveiled its Jetson Xavier NX compute module, there was no maker-friendly developer […]

Want AWS with easy-to-use Red Hat OpenShift Kubernetes container orchestration? You'll soon be able to get that.

A little over a year ago, I wrote the first of many posts arguing: if we want a healthy internet — and a healthy digital society — we need to …Since writing that post, a number of us at Mozilla — along with literally hundreds of partners and collaborators — have been exploring the questions: What do we really mean by ‘trustworthy AI’? And, what do we want to do about it?

Has anyone ever sent you a document in a format that just isn't quite right for you? Maybe you don't have access to the application used to create the document, or maybe you don't need the document so much as you need what's in it, or maybe you just flat out don't like the format. There's no wrong reason for disliking a file format. If it's not your preferred format, whether you find it cumbersome to use or you just don't like how its metadata is organized, then that's enough of a reason for you to convert it.

It’s 64-bit or nothing for PC-makers from now on. And face it, this isn't the year of Linux on the desktop. Microsoft has revealed that it’s no longer allowing original equipment manufacturers (OEMs) to pre-install 32-bit Windows 10.…

If there's one thing you can say about open source software (OSS), it's that it quietly yet inarguably runs our world. Most of the internet is built on open source software, and, these days, millions of developers build and maintain hundreds of thousands of open source packages in more than 250 programming languages. If that's not enough, enterprise companies continue to grow their investments in open source in 2020.

There's a new release of the open-source Linux command sudo, and it comes with improved auditing, logging, and security.

The Compex CP01 router board — also called the DR6018 — runs OpenWrt on a quad -A53 Qualcomm IPQ6018 and offers a 2.5GbE port, 5x GbE ports with PoE, an M.2 E-key slot, and dual-band 802.11ax (WiFi 6). A Compex CP01 router board has begun sampling with 802.11a/n/ac/ax (WiFi 6) built around a Qualcomm Atheros […]

Seeed has launched a $59.90 “Seeed Studio BeagleBone Green Gateway” SBC that runs Linux on TI’s Sitara AM3358 and combines the Ethernet port of the BeagleBone Green with the WiFi/BLE function of the BB Green Wireless. Seeed has launched a new model in its line of BeagleBone compatibles that balances the feature sets of the […]

As a systems engineer, I spend a lot of time in data centers configuring servers and other computer equipment. Two of the items I keep in my toolkit are an RS-232 serial-to-USB converter and a standard DB-9 serial cable. These can be indispensable when you have no other way to access a device. You may need to deploy a new router that has not yet been configured for your network. You might need to troubleshoot a firewall appliance that has become inaccessible via SSH. read more

In a recent article, I mentioned my 2020 New Year's resolution: no more loops in Java. In that article, I chose a common (and simplified) forest management calculation—determining whether an area is forested, based on a legal definition, by calculating the proportion of ground shaded by tree canopies. read more

How many iterations does it take to get a container configuration just right? And how long does each iteration take? Well, if you answered "too many times and too long," then my experiences are similar to yours. On the surface, creating a configuration file seems like a straightforward exercise: implement the same steps in a configuration file that you would perform if you were installing the system by hand. Unfortunately, I've found that it usually doesn't quite work that way, and a few "tricks" are handy for such DevOps exercises. read more

A good amount of my day-to-day involves creating, modifying, and deploying Helm charts to manage the deployment of applications. Helm is an application package manager for Kubernetes, which coordinates the download, installation, and deployment of apps. Helm charts are the way we can define an application as a collection of related Kubernetes resources.  read more