Add shell scripting tutorial (#7125)

* Add shell scripting tutorial

* Update courses/free-courses-en.md

* lint: alphabetize

Co-authored-by: David Ordás <3125580+davorpa@users.noreply.github.com>

courses/free-courses-en.md

@@ -205,6 +205,7 @@
 * [Bento Shell Track](https://bento.io/topic/shell) - Jon Chan (Bento)
 * [How to CMake Good](https://www.youtube.com/playlist?list=PLK6MXr8gasrGmIiSuVQXpfFuE1uPT615s) - vector-of-bool (YouTube)
 * [Shell Scripting Tutorial](https://www.youtube.com/playlist?list=PL7B7FA4E693D8E790) - The Bad Tutorials (YouTube)
+* [Shell Scripting Tutorial \| Shell Scripting Crash Course \| Linux Certification Training \| Edureka](https://www.youtube.com/watch?v=GtovwKDemnI) - edureka!
 * [Shell Scripting Tutorial for Beginners](https://www.youtube.com/playlist?list=PLS1QulWo1RIYmaxcEqw5JhK3b-6rgdWO_) -  ProgrammingKnowledge (YouTube)