Antonio Feijao UK

Solutions Architect (SA) at Amazon Web Services (AWS), with Speciality certifications of Advanced Networking and Security. I help customers building secure, high-performing, resilient, and efficient infrastructure for their applications and workloads. This is my personal website. The opinions expressed here are my own and do not necessarily represent those of my current or past employers.

Posts by Year

2020 9
2019 31
2018 1

2020

Install and connect to a Raspberry Pi without monitor

2 minute read

The purpose of this post is to briefly show how to install the Raspberry Pi OS into a new microSD card using a laptop or desktop. Then boot the Raspberry Pi ...

How to reinstall MacOS with external bootable disk

less than 1 minute read

How to reinstall MacOS with external bootable disk installer for Mac operating system. macOS Catalina, macOS Mojave, or macOS High Sierra. You can use an ext...

AWS EC2 userdata sample script

less than 1 minute read

Sample of an AWS EC2 userdata script that install apache and automatically creates an index.html file as a landing webpage with information about the instanc...

Level of IQ of the smartest people on Earth

8 minute read

See this list of the smartest people ever on Earth, listed by their level of IQ! With links to Wikipedia to read more about these genius. Purpose of this lis...

Linux Command Xargs For Parallel Execution

less than 1 minute read

xargs command can be use to speed up linux command and run mulitiple linux command in parallel.

Linux Command Tee Examples How It Works

less than 1 minute read

tee command in linux command line, how tee works, simple explanations. Imagine the tee command as a ‘T’ , input on the left and 2 exists or outputs, right an...

Practice Python 3 with the fibonacci sequence

less than 1 minute read

Learn Python with a simple “do it yourself” challenges. I went to bed thinking “how could I do the Fibonacci sequence without looking on the internet. Next d...

Yum Provide Which Package Contains The Command

less than 1 minute read

See how to find the package you will need to install for the command you are looking for. Example, I was looking for the tshark command, but a simple yum sea...

Docker Images And Containers Start With Basic And Bonus Advanced Security

1 minute read

Docker images and containers start with basic and bonus advanced security

2019

Python3 Merry Christmas

less than 1 minute read

Python 3 prints Merry Christmas Everyone!

Pip3 List Installed Upgrade All

less than 1 minute read

So, I want to list the packages installed with pip3 and now that I can see them, I want to update them all.

Github Basics Command

less than 1 minute read

Github git basic commands

Devsecops In Your Company Dna

less than 1 minute read

DecSecOps in your company DNA

Raspberry Pi As A Router Nat

less than 1 minute read

Transform to run as a router and NAT device

Online Learning Websites

less than 1 minute read

Online list of learning websites and channels that I follow. Website that I use for training in various areas.

Python 3 Http Server

less than 1 minute read

A quick and simple way to start a webserver on the current directory with Python 3 using module http.server

Linux Find Command

less than 1 minute read

Linux find command

Clamav Linux Free Antivuris Scan

less than 1 minute read

Linux Clam AntiVirus ClamAV

Vimrc File

1 minute read

vimrc file options

Vim Forgot Sudo To Save

less than 1 minute read

vim and forgot to sudo and now?

Aws Cloudwatch Logs Cloudtrail Logs Filters Sample

less than 1 minute read

AWS CloudWatch logs CloudTrail logs and filters examples

Raspberry Pi Camera Resolution

less than 1 minute read

Linux command lsusb

Aws Network Transit Gateway To Vpc

less than 1 minute read

AWS Transit Gateway to VPC

Raspberry Pi Swap Memory

less than 1 minute read

Raspberry Pi increase the swap memory size

Aws Global Infrastructure And Network Backbone

less than 1 minute read

AWS Global Infrastructure

Python3 Learning

1 minute read

Python 3 learning for the first time

Raspberry Pi Stranger Things Alphabet Wall Lights

less than 1 minute read

Stranger Things Alphabet Wall Lights with Raspberry Pi Python 3 and Neopixels

Project Ninjapt

less than 1 minute read

Ninja.pt

Aws Database Conversion Tool

less than 1 minute read

DMS tool

Aws Cli Iam Roles And Tokes

less than 1 minute read

AWS cli IAM roles and tokens

Aws Cli Find All Instances In All Regions

less than 1 minute read

Lists all ec2 instances in all regions including account owner, instance id, instance type, statues and region.

S3 Copy Sync Filter Files

less than 1 minute read

S3 cp sync exclude include

Linux Dig Troubleshooting Dns Records And Domain

less than 1 minute read

Sample usage of Linux dig command for dns troubleshooting

Aws List Of Services

3 minute read

Simple way to get a list of AWS Services. As of $ date +%Y-%B-%d, 2019-November-26 there are 206 service. Checked by using wc -c command at the end of the b...