If your Linux computer can’t boot into its operating system, you’re likely to find yourself staring at a prompt in the GRUB shell. Follow these steps to repair your broken boot processes.

Has your Excel, Word, or Outlook app’s ribbon suddenly disappeared? It’s easy to hide it accidentally, and sometimes the tabs disappear too. In either case, you can bring it back in your Office app on your Windows or Mac machine in a few clicks.

Note: The following guide uses Excel for demonstration. You’ll use the same steps in both Word and Outlook.

Docker’s normally used to containerise background applications and CLI programs. You can also use it to run graphical programs though! You can either use an existing X Server, where the host machine is already running a graphical environment, or you can run a VNC server within the container.

First it’s important to understand what Docker actually does. A Docker “container” is a form of encapsulation which seems to be superficially similar to a virtual machine. Unlike a virtual machine, containers share the same Linux kernel as their host system.

The next component is the X Window System. X Servers such as Xorg provide the fundamental graphical capabilities of Unix systems. GUI applications can’t render without an X Server available. (Alternative windowing systems, such as Wayland, are available – we’re focusing on X in this article.)

Trying to run an X Server in Docker is theoretically possible but rarely used. You’d need to run Docker in privileged mode (--privileged) so it could access your host’s hardware. Starting the server would try to claim your video devices, usually resulting in loss of video output as your host’s original X server gets its devices yanked away.

A better approach is to mount your host’s X Server socket into the Docker container. This allows your container to use the X Server you already have. GUI applications running in the container would then appear on your existing desktop.

If your Arch Linux computer supports Bluetooth but you’re not using it, it’ll just be wasting power. Instead of turning it off whenever you boot your computer, disable the Bluetooth service instead.

If your Steam Deck suffers from SteamOS-related issues—failing to boot, being unresponsive or any other similar problem—you might want to reinstall or reimage SteamOS.

Every network interface has a unique MAC address, set by the manufacturer. It’s how network connections identify connection endpoints. On Linux, you can permanently change a MAC address if you want.

Kubernetes support for stateful applications has considerably matured over the past few years. Now it’s viable to locate your database inside your cluster, allowing it to benefit from the same scalability as your other workloads.

MySQL is one of the most popular relational database engines and it’s now augmented by an official Kubernetes operator. The Oracle-led open-source project provides a simple way to create managed MySQL clusters within Kubernetes.

Oracle’s MySQL Operator for Kubernetes is a convenient way to automate MySQL database provisioning within your cluster. One of the operator’s headline features is integrated hands-off backup support that increases your resiliency. Backups copy your database to external storage on a recurring schedule.

This article will walk you through setting up backups to an Amazon S3-compatible object storage service. You’ll also see how to store backups in Oracle Cloud Infrastructure (OCI) storage or local persistent volumes inside your cluster.

Taints and tolerations are a Kubernetes mechanism for controlling how Pods schedule to the Nodes in your cluster. Taints are applied to Nodes and act as a repelling barrier against new Pods. Tainted Nodes will only accept Pods that have been marked with a corresponding toleration.

Taints are one of the more advanced Kubernetes scheduling mechanisms. They facilitate many different use cases where you want to prevent Pods ending up on undesirable Nodes.