--- yaboot/ybin/ofpath    2008-09-26 21:36:38.000000000 +1000
+++ test/ybin/ofpath    2008-09-26 16:41:00.000000000 +1000
@@ -306,7 +306,8 @@ scsi_ofpath()
         K2_DEVICE_ID=0
         while [ "$DEVICE_PATH" = "" ] ; do
             SCSI_HOSTNUMBER=`expr $SCSI_HOSTNUMBER - 1`
-            let "K2_DEVICE_ID += 1"
+# let not found in dash     #       let "K2_DEVICE_ID += 1"
+        K2_DEVICE_ID=$((K2_DEVICE_ID+1))
             DEVICE_PATH="$(printhost $SCSI_HOSTNUMBER $HOST_LIST)"
         done
         echo "${DEVICE_PATH##*device-tree}/k2-sata@$K2_DEVICE_ID/disk@0