NB: one-liner _pwgen

alias _pwgen='< /dev/urandom tr -dc A-Za-z0-9,.#%$ | head -c 8 ; echo -n \  ; < /dev/urandom tr -dc A-Za-z0-9,.#%$ | head -c 9 ; echo'
alias _pwgen='< /dev/random tr -dc A-Za-z0-9,.#%$ | head -c $(($RANDOM % 8+3)) ; echo -n \ ; < /dev/random tr -dc A-Za-z0-9,.#%$ | head -c $(($RANDOM % 8+3)) && echo'
alias _pwgen2='let i=1 && while [ $i -le 4 ] ; do \
    echo -n $(xkcdpass --numwords 2 --case capitalize | xargs) && echo -n \  && \
    < /dev/random tr -dc 0-9,.#%$ | head -c $(($RANDOM % 2+3)) && echo && let i++ ; done'

 

NB arduino-cli RP2040-zero

arduino-cli config add board_manager.additional_urls \
    https://github.com/earlephilhower/arduino-pico/releases/download/global/package_rp2040_index.json
arduino-cli core update-index
arduino-cli core install rp2040:rp2040
arduino-cli compile -b rp2040:rp2040:waveshare_rp2040_pizero
arduino-cli upload -b rp2040:rp2040:waveshare_rp2040_pizero -p /dev/ttyACM0