How to find /dev/ name of USB Device for Serial Reading on Mac OS?

So, I actually found the answer.

To find out what the device name is, I did an ls of the /dev/ directory with the device plugged in and then with it disconnected.

ls -lha /dev/tty* > plugged.txt
ls -lha /dev/tty* > np.txt

Then I compared the files using

vimdiff plugged.txt np.txt

And saw the line

crw-rw-rw- 1 root wheel 19, 30 Jan 16 15:24 /dev/tty.usbmodem145222

Sure enough, the device is named tty.usbmodem145222!


Please try

ls /dev/tty* | grep usb