Linux

Day-to-day Linux administration — from commands you always forget to structured setup walkthroughs.

Articles

• Enable Unattended Upgrades — automatic security updates on Ubuntu
• SSH Key Authentication — generate Ed25519 keys and configure remote login
• UFW Firewall — defaults, allow/deny rules, rate limiting
• Extend an LVM Volume — add space from free VG or a new disk, ext4 and XFS
• Enable Remote Desktop (RDP) — GNOME Remote Desktop (24.04) and xrdp (22.04), firewall and Wayland notes
• Apt-Cacher NG — LAN-wide apt package cache, client proxy config, HTTPS passthrough
• Command Reference — system info, resources, networking, users, apt — quick lookup table
• Schedule One-Time Commands — run scripts or commands once at a future time with at
• Send Mail with msmtp — lightweight SMTP client for server alerts and cron notifications
• Docker & Docker Compose — official apt install, user and group setup, automated bash script