How many terms are incompatible with Google? screen (the gnu screen program) is one of them unfortunately.
How often have you found yourself needing to upload an IOS to a dead router or switch? And how often do you have to do this on a Linux or Mac based machine?
Well, here is how to use sx from the lrzsz package and gnu screen. Firstly, connect your console to screen with a command like so:
screen /dev/tty.usbserial 115200
Then begin your xmodem transfer and follow up with some fancy screen commanding
^a :exec !! sx -kb Downloads/newfirmware.bin
That is control-a and then type, without the quotes, “:exec !! sx -kb path/to/firmware.bin”
Genius! Unfortunately, sx doesn’t really come stock with my particular flavor of OS so some package manager digging was in order.