hopefully fix restore again

restore.sh

@@ -1,6 +1,7 @@
-for b in $(find /mnt/save -type f | sort | tail -n 1); do
+for b in $(find /mnt/save -not -path '*/\.*' -type f | sort -r); do
    if [ -n "$b" ]; then
-      if du -sh "$b" | grep -Ei "^[ ]*(4|2[0-9])(.0)?[Kk]"; then
+      du -sh "$b"
+      if ! du -sh "$b" | grep -Ei "^[ \t]*[0-9][0-9]?(.0)?[mg]"; then
          echo would rm empty backup $b >&2
          set -x
          mv "$b" "${b%/*}/.${b##*/}"