Useful documentation for everyone! Step-by-step system administration, Linux, Windows Server, PowerShell, and security guides—combining battle-tested walkthroughs with modern AI-researched updates.
2026 Updated
Step-by-step visual guide to installing CentOS 8 on a virtual machine, modernized for 2026 with AlmaLinux 9, Rocky Linux 9, and automated Kickstart deployments.
2026 Updated
Visual guide to promoting a Windows Server 2016 machine to an Active Directory Domain Controller, updated with automated PowerShell deployment for Windows Server 2022/2025.
2026 Updated
How to automate Windows Updates and Defender definition updates on Windows Server 2019 using Local Group Policy, plus modern PowerShell and Azure Update Manager workflows.
2026 Updated
Learn how to create and configure Generation 2 Hyper-V virtual machines, virtual hard disks, CPU, SecureBoot, and networking using Windows PowerShell.
2026 Updated
Step-by-step tutorial on converting OpenSSH Ed25519 private keys to PuTTY .ppk format using PuTTYgen, plus how to use native OpenSSH in Windows 11.
2026 Updated
Learn how to generate Ed25519 SSH key pairs and deploy them to Linux servers using ssh-copy-id, plus modern FIDO2/YubiKey (ed25519-sk) and sshd hardening.