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Icinga 2 is a free and open source monitoring tool that can be used to monitor multiple servers or whole data centers from a single monitor system. In this tutorial, I show you how to install and configure the Icinga 2 monitoring tool using an Ubuntu 20.04 LTS server.

Linux, in a way, is a series of static and dynamic libraries that depend on each other. For new users of Linux-based systems, the whole handling of libraries can be a mystery. But with experience, the massive amount of shared code built into the operating system can be an advantage when writing new applications. read more

A new version of Raspberry Pi-based Little Backup Box is here, featuring improvements and new functionality.

For this week’s Raspberry Pi 4 blog, Luke puts a desktop search tool under the microscope.

NetworkManager is the network configuration daemon used on Fedora and many other distributions. It provides a consistent way to configure network interfaces and other network-related aspects on a Linux machine. Among many other features, it provides a Internet connection sharing functionality that can be very useful in different situations. For example, suppose you are in […]

Canonical has launched the Ubuntu Appliance initiative which aims to transform Raspberry Pi devices or personal computers into secure, self-updating solutions.

A discussion of storage space measurement units and reserved space.

Experienced developers, much like skilled artisans, rely on a set of tools to help them get their job done effectively and efficiently. However, trying to select the right tools can be intimidating, especially when you have many options to choose from. read more

In this article, we will describe two ways for Debian users to configure their laptop’s touchpad in a way that it is automatically disabled whenever they plug in an external mouse.

The who command is another handy command from the GNU Core Utilities package. Learn what it is, how to use it, and all about it's options and switches.

The CrossTalk vulnerability allows attacker-controlled code executing on one CPU core to leak sensitive data from other software running on a different core. In this article, we will show you how to mitigate this Intel CPU vulnerability without a server reboot.

This brief guide explains how to list the contents of a package in Linux.

The HP Linux Imaging and Printing (HPLIP) drivers have been updated to version 3.20.6, a release that adds support for several new HP printers and some of the latest GNU/Linux distributions.

It’s very difficult to give instruction or administrate when students are seated in a computer lab. To overcome this problem and get attention from everyone, you need to use the right lab management applications to suit your needs. This quick article shows you how to manage or monitor the Linux computer lab using the epoptes tool.

Elecrow is Kickstarter-ing a $140-and-up, 2nd gen “CrowPi2” STEAM education laptop and hacker kit for the Raspberry Pi with a 11.6-inch HD screen, 2MP camera, mic, speakers, and a hacking bay full of sensors and modules. Hong Kong based Elecrow has followed up on its 2018 Kickstarter campaign for its Raspberry Pi based CrowPi computer […]

Looping forever on the command line or in a bash script is easy. Coming up with the reasons why you want to interrupt an infinite loop and how you want to do that requires a little more effort.

Apache Hudi (Hadoop Upserts Deletes and Incrementals) is a data lake project that enables stream data processing on top of Apache Hadoop-compatible cloud storage systems, including Amazon S3.

The long face off between the U.S. Government and Huawei regarding 5G standards development has finally reached an end - at about the 90 yard line. Better than before. But not quite there.

Congatec’s Intel IoT RFP qualified “Realtime Workload Consolidation Starter Kit” for robotics and automation runs 3x VMs including RT Linux and Ubuntu using the RTS Hypervisor on an 8th Gen Conga-TS370 module with an Arria 10 GX FPGA and a Basler camera. Several years ago, Intel launched an Intel IoT RFP (Request for Proposal) qualification […]

The modulo operation is an arithmetic operation that finds the remainder of the division of one number by another. The remainder is called the modulus of the operation. In Python, the modulo operator is represented by the percent sign (%).