diff --git a/free-courses-pt_BR.md b/free-courses-pt_BR.md
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 ### Linux
 
+* [Introdução ao Sistema Operacional Linux](https://www.udemy.com/course/linux-ubuntu/) - Diego Mariano (Udemy)
 * [Terminal Linux](https://www.udemy.com/course/terminal-de-comandos-linux/) - Diego Mariano (Udemy)