Tag: linux

SBCs in 2026: Homelab on a Budget

DRAM prices are killing the hobbyist SBC market, but there are still great options. Here's what's worth buying in 2026 for a sub-$200 homelab setup.

Podman Quadlets: Systemd-Native Containers

Podman Quadlets turn containers into real systemd services using .container unit files — no daemon, no hacks, just clean native integration.

LUKS Full Disk Encryption on Linux

LUKS encrypts your drives so a stolen server is just expensive recycling. Here's how to set it up, manage keys, and unlock headless boxes remotely.

Rootless Docker: Run Without Root

Run Docker containers without root privileges — here's the security difference, the install steps, and the gotchas nobody tells you about.

PostgreSQL + Linux: Kernel Tuning That Actually Matters

An AWS engineer found Linux 7.0 halved their PostgreSQL performance. The fix was kernel tuning. Here's what settings matter and why, so you're not the last to know.

Proxmox NAT Bridge: One IP, Many VMs

Run multiple Proxmox VMs and LXC containers behind a single public IP using NAT bridging and iptables port forwarding. Updated for Proxmox VE 8.

Linux Privilege Escalation: The Defensive Playbook

Attackers love finding ways to go from www-data to root. Here's how they do it, and more importantly, how you harden your Linux boxes to stop them.

Adding Extra Swap to Linux

Out of RAM and no time to reimage? Add swap via a file on any partition using mkswap, swapon, and fstab — done in under 5 minutes.

Bash for loops sequential counting

Master bash for loops, while loops, and seq for sequential counting — iterate over files, ranges, and arrays without losing your mind.

Directory FileCount

Count files in a directory (recursively or not) with find, ls, and tree — quick one-liners for when du just isn't telling you enough.

Find out whats taking up all the hdd space

Your disk is full and du is lying to you. ncdu, df, and find tricks to track down space hogs before your server goes down at 2 AM.

Linux CLI Tarball Extraction — Flags, Formats, Gotchas

Extract tar.gz, tar.bz2, tar.xz — flags demystified, compression compared, directory extraction, and the gotchas that trip you up.