first approach to new software

The program exited before those last three commands... so you're stuck here now.

Forgot to try “quit”

Actually, it’s :q

I remember when I had to kill the terminal to close the server cause I didn't know other way haha. I had to take screenshots of the errors too haha

You didn't even try sigint (C-c) or EOF (C-d)?

Wait... What are you doing here?

@blindXfish trying to stop npm start command

@5enchriu beginner? You are a dev?

@blindXfish junior lol

That would never work. Command line programs don't take input unless they want to. Use Ctrl+c to send an interrupt signal, or in English to tell the program that you want it to stop. If you would rather indicate that you don't want to talk to a program anymore, use Ctrl+d, which sends an end-of-file character.

@5enchriu There are numerous ways to end a rogue program. Writing into its standard input when the program didn't clearly indicate that it's listening isn't one of them.