Heitor's log

How to load .env variables into Bash, using a one-liner.

An ad showed me a tool I'd never seen or searched for, but I instantly wanted.

What I write is not 100% human-written anymore.

How to restore man pages and other stripped content in minimized Ubuntu Docker images.

Checking how ZFS compares against ext4 for my NAS, with an encrypted RAID1 array.

Calculating checksum of files accross nested directories, and verifying them, without any custom scripts.

`#` starts a comment in Bash, but not always.

Ever wondered why a package ended up in your Nix store?

Trying to win the lottery with pure Linux RNG magic.

There are plenty of CLI tools to calculate the checksum of files.

How to use fwupd to update device's firmware on Linux.

How to use the `timeout` command to terminate processes after a specified time and how to combine it with `until` for smarter shell scripting.

Boosting productivity with Git aliases: what they are, their benefits over shell aliases, setup, and examples.

How to push and pull Docker/Podman images to a remote server, without using an Image Registry.

Creating temporary files and directories in Python, using the standard library module `tempfile`.

Need to work with tar files in Python?

How to generate random strings in Bash.

How to setup Mainsail and webcam support on Creality Ender 3 V3 KE printer.

TIL: looping over hexadecimal numbers in Bash just takes one line.

Listing PCI devices by manufacturer and/or device type/class.

`jq` tricks that I learned over the years to parse JSONs.

How to turn ugly JSONs into pretty JSONs inside Vim.

The more I use NixOS the more interesting it gets.

How to pretty format a Markdown table using vanilla Vim or NeoVim.

How to get Nomad running on NixOS for local development, with Podman and Docker task drivers.

How to feed the output of one process to multiple other processes simultaneously, using tee and Bash's process substitution.

How to find out your public IP address on the command line after reinventing the wheel using Rust, Axum, Nix, a docker image and Fly.io.

How to create symbolic links in Python.

Fixing an RGB LED controller.

How to copy files to remote servers that require sudo.

What is a blackhole route and how to create one on Linux.

The history of my website - so far.

Hell yeah!

How I found an Easter egg after being challenged by my boss.

Exploiting C++ std::adjacent_find predicates.

My experience with PiHole after one month.

My notes about the Linux Upskill Challenge.

How to setup PiHole on a Raspberry Pi.

Logs are important.

How to use multiple git remotes for easier repository management.

What is memoization and how to use it to cache the output of functions in Python.

How to convert file encodings in the terminal.

How to get random integers from /dev/random in Bash.

Close your matplotlib figures for faster image generation.

Fun with Python format().

I hunted a treasure.

Switzerland is amazing for Hiking.

GPX fun in Python.

Mussum Impsum.

Test description.