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Back in the bad old days, setting up basic HTTPS with a certificate authority cost as much as several hundred dollars per year, and the process was difficult and error-prone to set up. Now we have Let's Encrypt for free, and the whole thing takes just a few minutes.

Every process that's executed on a computer system requires CPU to do what it is expected to do. There may be times when your system's CPU is overloaded (due to the number or kind of processes running on the system), and for whatever reason, you want to know the number of available processing units for new processes. Well, there's a tool dubbed nproc that you can use to confirm this information.

I get asked all the time about the different security measures used to control what container processes on a system can do. Most of these I covered in previous articles on Opensource.com: read more

By profession, I'm a software developer. Aside from a preferred editor, what matters most to a developer is the use of a Source Code Manager (SCM). So, when a new product comes along featuring my favorite SCM, Git, I had no choice but to spend some time using it.

The US Court of Appeals has reversed a 2016 jury decision on Google's use of Oracle's Java APIs as fair use. The damages could amount to nearly $9 billion for Google.

The face of Docker, the leading container company, Solomon Hykes, is stepping down. Insiders knew this had been coming for months, but today, Solomon Hykes, Docker's founder, announced he was leaving day-to-day work at the leading container company.

A recently discovered malware family written using the Golang (Go) programming language is targeting Linux servers and using a different binary for each attack, Talos warns.

Since the days of papyrus, publishers have struggled with formatting data in ways that engage readers. This is a particular issue in the areas of mathematics, science, and programming, where well-designed charts, illustrations, and equations can be key to helping people understand technical information. read more

I just completed the first semester of my second year in college, and I'm reflecting on what I learned in my classes. One class, in particular, stood out to me: "Foundations of an Open Source World," taught by Dr. Bryan Behrenshausen at Duke University. I enrolled in the class at the last minute because it seemed interesting and, if I’m being honest because it fit my schedule. read more

In this tutorial, we will learn how to install eSyndiCat on Ubuntu 16.04 server. eSyndiCat is a free, open source and one of the most popular PHP directory software that can be used as an addition to your existing site or as a stand-alone platform.

Developers can create many useful services using Github’s webhooks. From triggering a CI job on a Jenkins instance to provisioning machines in the cloud, the possibilities are almost limitless. This tutorial shows how to use Python and the Flask framework... Continue Reading →

WSL blueprint open-sourced to tempt distro makers. Microsoft quietly open-sourced a Windows Subsystem for Linux (WSL) sample last night in an effort to persuade Linux distribution maintainers to add their distros to the Windows Store.…

You thought this was over? You thought wrong, laughs Larry. The US Court of Appeals for the Federal Circuit in Washington DC has revived Oracle's bid to bill Google for billions over its use of copyrighted Java APIs in its Android mobile operating system.…

The Linux Foundation announced new support for its “Akraino Edge Stack” project for creating open source cloud services for edge computing, including Intel’s promise to open source parts of its Wind River Titanium Cloud and Network Edge Virtualization SDK.

Sometimes kernel developers can work in parallel for years without realizing it. It's one of the inefficiencies of a distributed system that tends to work out as a benefit when you have enough contributors to be able to spare the extra labor—it's sort of a "with enough eyeballs, all bugs are shallow" kind of thing.

Do you want to start a blog to share your latest adventures with various software frameworks? Do you love a project that is poorly documented and want to fix that? Or do you just want to create a personal website? read more

You may have noticed how a lot of your online developer identity is tied to your email address. If someone can gain access to your mailbox, they would be able to do a lot of damage to you personally, and to your reputation as a free software developer. Protecting your email accounts is just as important as protecting your PGP keys.

In this tutorial, we will learn how to achieve high availability of MariaDB using Heartbeat and DRBD on Ubuntu 16.04 server. Heartbeat and DRBD both are used for a cluster solution for any application using two servers. Both servers are work in active and passive mode, one server will work at the same time and another server as a backup server.

At the tail end of 2015, the Raspberry Pi Foundation surprised the world by releasing the diminutive Raspberry Pi Zero. What's more, they gave it away for free on the cover of the MagPi magazine. I immediately rushed out and trawled around several newsagents until I found the last two copies in the area. I wasn't sure what I would use them for, but I knew their small size would allow me to do interesting projects that a full-sized Pi could not satisfy. read more

For any device connected to the internet or a network, it's essential that you log events so you know what the device is doing and can address any potential problems. Increasingly those devices include Internet of Things (IoT) devices and embedded systems. read more