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How to Maximize the Scalability of Your Containerized Environment

One main reason to use containers is that they help make apps, services and environments highly scalable. But that doesn’t happen magically. In order to take full advantage of the benefits of containers, you have to build your stack and configure your environment in ways that maximize scalability....
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GitOps: ‘Git Push’ All the Things

While the idea of cloud-native computing promises to change how modern IT operations work, the idea remains vague for many who work in the profession. “GitOps,” an idea that generated some buzz at the KubeCon + CloudNativeCon EU conference in Copenhagen last week, could bring some much-needed focus...
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PacVim – A CLI Game To Learn Vim Commands

Howdy, Vim users! Today, I stumbled upon a cool utility to sharpen your Vim usage skills. Vim is a great editor to write and edit code. However, some of you (including me) are still struggling with the steep learning curve. Not anymore! Meet PacVim, a CLI game that helps you to learn Vim commands....
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Learn to Create Bootable Linux Flash Drive (using Ubuntu)

To be able to install Ubuntu or any other Linux OS or even any other OS like Windows etc, we either need a bootable FlashDrive or a DVD of the OS. In this tutorial, we will discuss how we can create bootable Linux Flash Drive using a Ubuntu System. There are many tools on almost all operating...
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Linux-Friendly Arduino Simplifies IoT Development

Arduino’s support for Linux IoT devices and single-board computers (SBCs) announced at the Embedded Linux Conference+Open IoT Summit NA in March cemented Arduino’s focus on cloud-connected IoT development, extending its reach into edge computing. This move was likely driven by multiple factors —...
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What Is an API? Application Programming Interfaces Explained

API, for application programming interface, is one of those acronyms that is used everywhere from command-line tools to enterprise Java code to Ruby on Rails web apps. Unless you write every single line of code from scratch, you’re going to be interacting with external software components, each...
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People Are Freaking Out That PGP Is ‘Broken’—But You Shouldn’t Be Using It Anyway

Hackers that can intercept your encrypted emails, or steal your emails from your computer or a server, may be able to decrypt them taking advantage of new vulnerabilities found in the way some email clients treat HTML. On Monday, the world was reminded once again that the almost 30-year-old...
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Using the Command Line to Decrypt a Message on Linux

If you have disabled the PGP plugin from your mail client and saved a copy of an encrypted email to your desktop, this guide will help you read that message in as safe a way as possible given what we know about the vulnerability described by EFAIL. Note that the first three steps (opening the...
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Wendy Cartee, Nick McKeown, Guru Parulkar, and Chris Wright discuss the first 10 years of software defined networking at Open Networking Summit North America.

The First 10 Years of Software Defined Networking

In 2008, if you wanted to build a network, you had to build it from the same switch and router equipment that everyone else had, according to Nick McKeown, co-founder of Barefoot Networks, speaking as part of a panel of networking experts at Open Networking Summit North America.  Equipment was...
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Batch Editing Files with ed

The other day at work I needed to edit 200 files at once. I wanted to do something pretty simple: basically, I had files that looked like this: foo: - bar - baz - bananas and I wanted to insert an extra line after the baz line that said elephant foo: - bar - baz - elephant - bananas...
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