iridakos

Hi, I am Lazarus Lazaridis and this is my personal blog with posts mostly related to programming.
And cats.

Mountains
Painting of mountains following Bob Ross' season 13 Episode 10.

Meadow
Painting of a meadow following Bob Ross' season 5 Episode 13.

Drawing my cat
My attempt to draw my cat that looks nothing like this.

Composing better emails
Tips for writing effective emails avoiding misunderstandings with examples from the software development world.

awk '!visited[$0]++' or how to remove duplicate lines from files keeping the original order explained
How to remove duplicate lines of a file in Linux without sorting or changing their order (awk one-liner explained).

How to manage nested objects in Elasticsearch documents
How to add, update and delete nested objects in Elasticsearch documents using the Update API and painless scripts.

How to alias and navigate to directories with autocomplete in Linux
A Linux shell script for registering directory aliases and navigating to them with tab completion.

Dockerizing a Rails application
A step by step tutorial to dockerize a Rails application and run it in Docker with PostgreSQL and Redis.

Creating a chat application from scratch using Rails and WebSockets
A step by step tutorial for creating a chat application with Rails and WebSockets (ActionCable).

Elasticsearch bucket aggregations and faceted navigation - facets
A step by step tutorial for using Elasticsearch bucket aggregations to implement faceted navigation a.k.a. facets.