#linux Development Tutorials & Tips | Roast Dev

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My First AWS EC2 Instance: From Stumbles to a Running Nginx Server

Introduction Starting my DevOps journey, I set out to launch an EC2 instance and host a web server. It wasn’t all smooth sailing, but I learned a ton along the way. The Plan Launch...

23.03.2025 0 Read More

Comunicaciones seguras

Si algo ocurre en el gremio de los desarrolladores es que nunca dejamos de estudiar. Ayer me entró la curiosidad sobre cómo poner en funcionamiento un "anonimizador" y opté por coger una máquina o...

23.03.2025 0 Read More

How to Edit the Sudoers File in NixOS - with Examples

Intro I wanted to configure the /etc/sudoers file in NixOS to setup an account that doesn't require password with sudo for Ansible management. However, the wiki page for sudo is a bit lacking...

23.03.2025 0 Read More

Locking Down Your Servers: A Developer's Guide to Server Security & Hardening

In the digital battleground, your server is both a fortress and a target.Whether you're managing a cloud instance, an on-prem machine, or a hybrid infrastructure, securing your servers is a non-negoti...

24.03.2025 0 Read More

Manually Install WiFi Drivers on Linux

On December 24th, 2024, Debian had me a gift for me: it installed Linux kernel 6.11.10, and suddenly the WiFi module of my laptop stopped working. I quickly found a workaround (selecting an older kern...

24.03.2025 0 Read More

Script Zone Transfer

Explorando a Transferência de Zona com Script Vamos entender e criar um script para explorar a transferência de zona DNS de forma automática. O objetivo é tentar realizar uma transferênc...

24.03.2025 0 Read More

Customize Your Linux Desktop: A Beginner’s Ricing Guide

Ever wanted to customize your Linux desktop but felt lost in all the components and choices? You’re not alone—I’ve been there too. This guide is for beginners and anyone looking to rice their se...

24.03.2025 0 Read More

Fixing NO_PUBKEY GPG Errors on Ubuntu – The Cleanest Way

While updating my Ubuntu server, I encountered this annoying error:⛶bash NO_PUBKEY [KEY_ID] The following signatures couldn't be verified... After trying a few things, I found a clean and reliable ...

24.03.2025 0 Read More

Easiest way for Jenkins installation

Requirements 256MB RAM 1 GB of disk space ( 10GB if running as a Docker container ) Java 11 or 17 Modern web browsers ( Google chrome, Apple safari, Mozilla Firefox, Microsoft Edge ) Port 80...

24.03.2025 0 Read More

The Dockerfile Disaster: How a Non-Root User Broke Our Production App!

We all know running containers as root is risky. So, like a responsible DevOps engineer, I switched my Docker container to a non-root user. Everything seemed fine… until my app failed to csv export ...

24.03.2025 0 Read More

My First AWS EC2 Instance: From Stumbles to a Running Nginx Server

Comunicaciones seguras

How to Edit the Sudoers File in NixOS - with Examples

Locking Down Your Servers: A Developer's Guide to Server Security & Hardening

Manually Install WiFi Drivers on Linux

Script Zone Transfer

Customize Your Linux Desktop: A Beginner’s Ricing Guide

Fixing NO_PUBKEY GPG Errors on Ubuntu – The Cleanest Way

Easiest way for Jenkins installation

The Dockerfile Disaster: How a Non-Root User Broke Our Production App!

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