System services are one of the most important parts of a Linux system. They start applications in the background, open sockets, mount file systems, run timers and keep your system operational.
On modern Linux distributions this is usually handled by systemd. The main CLI tool to interact with systemd is systemctl.
Git is a distributed version control system. In plain words: it tracks file changes so you can review, compare, and roll back safely.
exec removed from Agent after updateexec disappeared and became not accessible because the tool profile switched to a restrictive mode.
A brief description of common CLI network tools.
This article explains SSL/TLS certificates, the ACME protocol, and Certbot, focusing on how they interact and depend on each other.
This guide explains how to secure SSH connections using FIDO2 (YubiKey) for authentication and provides a brief overview of SSH basics. Traditional SSH passwords and key files rely on secrets that can be copied or stolen. FIDO2 improves security by using a hardware-backed public/private key pair. The private key never leaves your device, while the public key is stored on the server.
To exchange files between Windows and Linux systems, SCP "Secure Copy" can be used, among other things.
This article describes how to upgrade ESXi hosts within vCenter using vSphere Lifecycle Manager.
A PowerShell module is a package that contains PowerShell code such as functions, variables, workflows, and more — bundled in a reusable format. Modules enable users to import additional commands into their session, making them an efficient way to extend PowerShell’s capabilities.
$Profile is a PowerShell built-in variable. It actually points to a script file Microsoft.PowerShell_profile.ps1 which will be run every time you start PowerShell. It's more or less like .bashrc or .zshrc in the Linux/Unix world.