Christiano Anderson
Christiano Anderson
I’m a senior data engineer and team lead, passionate about Spark, Data Streaming, SQL, Python, Scala, Linux, Open Source.
August 2026
September 2026
Top Words
- gnome
- fedora
- postgresql
- fish
- apache
All posts (26)
I’ve been hunting for a screenshot tool that’s actually good for GNOME, and I’m pretty sure I found my new go-to: Gradia. I’ve been using it for a while now, and it’s fantastic. You can add notes, highlight sections, add arrows, very helpful when you’re working on documentation or teaching a tech class.
In psql, null values are displayed as blank strings by default, which can be confusing to read. However, you can customize this behavior by setting a specific character to represent null values, making your output more readable and easier to interpret: \pset null '-x-' All null values will become -x-, which is much...
I have a new ls replacement! I was using eza (see Eza on Fedora 42 ) for a while, but I’ve found something even better: lsd. This tool is a nice because it displays icons for file types, making it so much easier to navigate files directories. The default settings are great, but the date format mm/dd/yyyy is a bit...
In my previous post, I wrote about using Eza on Fedora 41, which works well and it can be installed via dnf. This week, I upgraded my main computer to Fedora 42 and noticed that the Eza package is no longer available and couldn’t be installed using dnf. I looked into the rust-eza and discovered that the maintainer...
Eza is a modern replacement for ls, it’s written in Rust, small, fast and just a single binary. How to replace in Fedora with Fish Shell sudo dnf install eza alias --save ls eza Done!
I often have to merge data from different tables in PostgreSQL, this is a code snippet I use: MERGE INTO users u USING new_users n ON u.user_uuid = n.user_uuid WHEN NOT MATCHED THEN INSERT VALUES (n.user_uuid, n.first_name, n.last_name) WHEN MATCHED THEN UPDATE SET first_name = n.first_name, last_name = n.last_name...
I’ve streamlined my blogging process using Hugo by automating tasks with the Fish Shell. I created a simple script that saves me a few minutes each time I write a new post. It automatically starts a new Hugo post and opens it in Helix editor, allowing me to write, save, and publish with ease. File name: new_til.fish...
This is a short snippet to run PostgreSQL using Podman with a volume. The snippet has been tested on Fedora 41. Create the Podman volume $ podman volume create psqldevel Run PostgreSQL $ podman run -d -p 5432:5432 -v psqldevel:/var/lib/postgresql/data -e POSTGRES_PASSWORD=xx --name psqldevel postgres:latest
As I continue to explore the world of Data Engineer, Linux, Fedora and other intersting topics, I often find small but interesting topics, that don’t deserve a full blog post, but I don’t want to let these discoveries to go away. In this section, I’ll be documenting and sharing short snippets of knowledge, tips and...
I’m building a personal datalake, just for fun, using Apache Iceberg and Apache Spark. I’m writing a technical post explaining the process, and how to run a small datalake in your own computer.
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