change the smart card reader used by gnupg2 (the dirty way)

scdreader

#!/bin/bash

gpg2 --card-status > /dev/null 2>&1

READERS=($(echo scd getinfo reader_list | gpg-connect-agent –decode | awk '/^D/ {print $2}' | sed 's/%0A/ /g; /^$/d'))

BADCHOICE=true
while $BADCHOICE
do
    INDEX=0
    for READER in "${READERS[@]}"
    do
        INDEX=$(( INDEX + 1))
        echo ${INDEX}: ${READER} $(lsusb | grep -i ${READER//:X:0} | cut -d" " -f7-)
    done

    echo
    echo -n "Enter your choice [1-${INDEX}]:"
    read CHOICE
    [ $CHOICE -le $INDEX ] && [ $CHOICE -ge 1 ] && BADCHOICE=false || echo "Error: Bad option!"
    echo
done

CHOICE=$((CHOICE-1))

echo "reader-port ${READERS[$CHOICE]}" > ~/.gnupg/scdaemon.conf
killall -9 scdaemon

sleep 2

gpg2 --card-status