cargo install elf2uf2-rs

-d automatic deployment to a mounted pico.

-s open the pico as a serial device after deploy and print serial output.

-t send termination message to the device if ctrl c is pressed. Can be used on the device to trigger a reboot into programming mode with a call to reset_to_usb_boot(0, 0)

Original at https://github.com/raspberrypi/pico-sdk/tree/master/tools/elf2uf2