i=1
while [ $i -gt 0 ]; do
	opensc-tool --serial > /dev/null 2>&1
	i=$?
	if [ $i -gt 0 ]; then
		echo "Please insert card...."
		sleep 5
	else
		opensc-tool --serial | cut -b 0,48 >> card-database
	fi
done 
	
perl -ne s/[^0-9A-F]//g; $_ = substr($_,0,32); print "$_\n" card-database