10 Hello World programs for your Raspberry Pi

https://opensource.com/article/18/3/10-hello-world-programs-your-raspberry-pi
“Hello world” is the beginning of everything when it comes to computing and programming.
Having a nice simple readable “hello world” program makes for a good intro for beginners learning your language, library, framework, or tool.

This article shows ten different “hello world” programs that can be run on the Raspberry Pi using its Raspbian operating system, but without installing any additional software.