Rodrigo Vieira

Rodrigo Vieira

Rodrigo Vieira

29 followers

Founder at OperacionalTI, Linux SysAdmin, AWS Specialist, and Python developer (also have military training, just in case).

Linux Foundation Certified Sysadmin

May 12, 2019

I just received my grade of LFCS exam: 91%.I'm now a Linux Foundation Certified System Administrator.I would like to thank you Linux Academy for their...

Linux Foundation Certified Sysadmin

Interfaces and Abstract Classes

Apr 18, 2019

For most people I've talked on my journey through software development, abstraction always brings the idea of code reuse. You might think about...

Interfaces and Abstract Classes

Why encapsulate?

Apr 13, 2019

I'm pretty sure you can find enough material about encapsulation in the context of Object Oriented programming paradigm on the Internet. Thus, my...

Why encapsulate?

Access Control List - ACLs

Apr 6, 2019

To improve the well known Linux permission schema ugo/rwx, allowing us to set distinct permission for different individual users or groups we can...

Access Control List - ACLs

SELinux and AppArmor

Apr 6, 2019

They both are security related technologies classified as MAC - Mandatory Access Control. SELinux was created by NSA - National Security Agency, while...

SELinux and AppArmor

Docker Development Environment for PHP Apps

Apr 4, 2019

In this article, I will do a pragmatic approach about how to run a generic PHP application on three Docker containers: nginx, php-fpm, and...

Docker Development Environment for PHP Apps