System & Network Admin

Windows 11 has a lot to offer, but a few features are going by the wayside.

Measuring the energy consumption of software is far from being a trivial task. This article provides essential details about energy consumption tools, their...

Explains how to install qrencode command on Linux & generate WireGuard QR code on Linux for iOS or Android mobile for faster deployments

The Speed of Time

Microsoft Exchange has for many years been nearly unavoidable as a platform for groupware environments. Late in 2020, however, an Austrian open source software developer introduced grommunio, a groupware server and client with a look and feel familiar to Exchange and Outlook users.

A flurry of alternative apps have become available for the preinstalled Windows software and utilities. We list some of the best here.

Bash supports three types of loops, namely for loop, while loop and until loop. In this guide, we will learn about while and until loops.

Today I wanted to call some extra attention to those little things, the ones that don't get the spotlight, but simply make a developer's life better.

There are several ways to switch to the root user in Linux, and it can be confusing. Learn the differences between each command and their use cases.

NVMe stands for Non-Volatile Memory Express, and it refers to how software and storage communicate across PCIe and other protocols, including TCP. It's an open specification led by a non-profit organization and defines several forms of solid-state storage. [OS_EMBEDDED_MENU_RIGHT:]My laptop has an NVMe drive, as does my desktop. And they're fast. I love how quickly my computers boot and how quickly they're able to read and write data. There's no perceptible delay.

The networking startup says the new platform is aimed at "the other side of the house" from its usual network engineering customers.

GitOps has become more than a buzzword in the DevOps community. It consists of a set of best practices designed to better deploy, manage and monitor

This article introduces developers to eBPF and explains how it can be used to add security, networking, and other capabilities in the Linux kernel space.

This post will demonstrate how to use eBPF to trace encrypted connections that operate over TLS (or its predecessor, SSL). TLS has become the standard for…

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Dynamic packet capture is a Kubernetes-native way to troubleshoot your microservices and applications without granting extra permissions.

Nowadays you can hear lot about microservices. Spring Boot is an excellent choice for building single microservice but you need to interconnect them somehow. That’s what Spring Cloud tries to solve (among other things) – especially Spring Cloud Netflix. It provides various components e.g. Eureka discovery service together with client side load balancer Ribbon for inter-microservice...

The Ghost in the Shell series were about efficient working in the shell environment but one of the feats of any sysadmin profession is the shell scripting. It is often needed to ‘glue’ …

The Linux extended-attribute mechanism allows the attachment of metadata to files within a filesystem. It tends to be little used — at least, in the absence of a security module like SELinux. There is interest in how these attributes work, though, as evidenced by the discussions that have followed the posting of revisions of this patch by Vivek Goyal, which seeks to make a seemingly small change to the rules regarding extended attributes and special files.

Time Card is the heart of the Open Time Server project. It is an entirely open source board design that can be used with the OCP PTP driver in the Linux kernel to run a computer as a grandmaster clock source with hardware timestamping.

This is a WebP Image format GdkPixbuf loader, making WebP image thumbnails available in GTK applications, such as Nautilus (GNOME Files) or Thunar.

Here’s a little trick I worked out a while back. Along the way I’llintroduce two tools, direnv and Nix, which I’ve found super helpful whendeveloping many di...