Articles

A short guide to building Newsboat from source on Debian.

Test Ansible roles with Molecule using containers, with the setup kept in a reusable template.

Bash functions that use Docker to run Ollama, with start and stop wrappers.

A working Ansible install using pipx, with collections pulled from requirements.yml.

Turn text into a state diagram with a short shell pipeline and Graphviz.

Bash functions that take the thinking out of hostnames.

The Bang Wong colorblind-safe palette is a sensible and attractive default.

Solve Let's Encrypt dns-01 challenges through Mail-in-a-Box by pairing Traefik's exec DNS provider with a small shell shim.

Track your X11 application usage with xprop, ps, and a local SQLite file.

A two-line Bash prompt showing tty, user, host, path, and a smiling or frowning face for the last exit code.

A quick script to dynamically update Cloudflare DNS records from cron.

Run sshd on alternate ports to work around difficult ISPs.

A short Python script that hashes a photo library, finds duplicate files, and moves them aside, with a dry-run mode first.

Full-disk encryption using mdadm RAID 1, LVM, and LUKS.

A geolocating shell weather function for forecast.io, plus the wttr.in one-liner that replaced it.

Mount Windows SMB shares at boot on a Linux machine with a credentials file and mode hints.

Using a fast disk as a cache in front of an LVM logical volume.

A quick example of how to enable trim support for block devices using systemd timers.

A basic firewall configuration using firewalld on CentOS 7.