serial="--serial $1"
;;
0)
- snum=`dmesg | grep 'on chaoskey' | tail -1 | sed 's/.*chaoskey \([0-9a-f][0-9a-f]*\) on chaoskey.*/\1/'`
+ snum=`sudo dmesg -t | awk '/usb.*Product:/ { ck = index($0, "ChaosKey"); }
+ /usb.*SerialNumber:/ { if (ck) print $4; }' | tail -1`
+
case "$snum" in
"")
serial=""