Uirá Ribeiro is a distinguished figure in the IT and Linux communities, celebrated for his extensive expertise and contributions over two decades. As a professor, author, and advocate, he has significantly influenced the landscape of Linux professionalism in Brazil and beyond. With a robust academic background in computer science, specializing in distributed systems, parallel computing, and cloud computing, Uirá possesses a deep understanding of the technical intricacies of Linux and free and open source software (FOSS). His dedication to education is evident in his role as a professor, where he mentors IT professionals, helping them achieve LPI certification through his books and courses. Beyond academia and writing, Uirá actively participates in the free software community, contributing to conferences, workshops, and organizations like the Free Software Foundation and Linux Foundation. Uirá is also the CEO and founder of Linux Certification Edutech, where he has taught Linux online classes for 20 years.