optionally specify USB drive for backup and restore

src/freedombone

@@ -1456,14 +1456,20 @@ function create_backup_script {
 
   echo '#!/bin/bash' > /usr/bin/$BACKUP_SCRIPT_NAME
   echo '' >> /usr/bin/$BACKUP_SCRIPT_NAME
-  echo "if [ ! -b $USB_DRIVE ]; then" >> /usr/bin/$BACKUP_SCRIPT_NAME
+  echo "USB_DRIVE=$USB_DRIVE" >> /usr/bin/$BACKUP_SCRIPT_NAME
+  echo 'if [ $1 ]; then' >> /usr/bin/$BACKUP_SCRIPT_NAME
+  echo '  USB_DRIVE=/dev/${1}1' >> /usr/bin/$BACKUP_SCRIPT_NAME
+  echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
+  echo '' >> /usr/bin/$BACKUP_SCRIPT_NAME
+  echo 'if [ ! -b $USB_DRIVE ]; then' >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo '  echo "Please attach a USB drive"' >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo '  exit 1' >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo '' >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo "if [ ! -d $USB_MOUNT ]; then" >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo "  mkdir $USB_MOUNT" >> /usr/bin/$BACKUP_SCRIPT_NAME
-  echo "  mount $USB_DRIVE $USB_MOUNT" >> /usr/bin/$BACKUP_SCRIPT_NAME
+  echo -n '  mount $USB_DRIVE ' >> /usr/bin/$BACKUP_SCRIPT_NAME
+  echo "$USB_MOUNT" >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo "if [ ! -d $USB_MOUNT/backup ]; then" >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo "  mkdir $USB_MOUNT/backup" >> /usr/bin/$BACKUP_SCRIPT_NAME
@@ -1965,14 +1971,20 @@ function create_restore_script {
 
   echo '#!/bin/bash' > /usr/bin/$RESTORE_SCRIPT_NAME
   echo '' >> /usr/bin/$RESTORE_SCRIPT_NAME
-  echo "if [ ! -b $USB_DRIVE ]; then" >> /usr/bin/$RESTORE_SCRIPT_NAME
+  echo "USB_DRIVE=$USB_DRIVE" >> /usr/bin/$RESTORE_SCRIPT_NAME
+  echo 'if [ $1 ]; then' >> /usr/bin/$RESTORE_SCRIPT_NAME
+  echo '  USB_DRIVE=/dev/${1}1' >> /usr/bin/$RESTORE_SCRIPT_NAME
+  echo 'fi' >> /usr/bin/$RESTORE_SCRIPT_NAME
+  echo '' >> /usr/bin/$RESTORE_SCRIPT_NAME
+  echo 'if [ ! -b $USB_DRIVE ]; then' >> /usr/bin/$RESTORE_SCRIPT_NAME
   echo '  echo "Please attach a USB drive"' >> /usr/bin/$RESTORE_SCRIPT_NAME
   echo '  exit 1' >> /usr/bin/$RESTORE_SCRIPT_NAME
   echo 'fi' >> /usr/bin/$RESTORE_SCRIPT_NAME
   echo '' >> /usr/bin/$RESTORE_SCRIPT_NAME
   echo "if [ ! -d $USB_MOUNT ]; then" >> /usr/bin/$RESTORE_SCRIPT_NAME
   echo "  mkdir $USB_MOUNT" >> /usr/bin/$RESTORE_SCRIPT_NAME
-  echo "  mount $USB_DRIVE $USB_MOUNT" >> /usr/bin/$RESTORE_SCRIPT_NAME
+  echo -n '  mount $USB_DRIVE ' >> /usr/bin/$RESTORE_SCRIPT_NAME
+  echo "$USB_MOUNT" >> /usr/bin/$RESTORE_SCRIPT_NAME
   echo 'fi' >> /usr/bin/$RESTORE_SCRIPT_NAME
   echo "if [ ! -d $USB_MOUNT/backup ]; then" >> /usr/bin/$RESTORE_SCRIPT_NAME
   echo '  echo "No backup directory found on the USB drive."' >> /usr/bin/$RESTORE_SCRIPT_NAME