USERNAME="..."
PASS="..."
LIMIT="$1"

rm -rf export.zip

declare -a coll=("credits" "duels" "histories" "inventories" "reservations" "rounds" "shops" "skins" "transactions" "transfers" "users")

for i in "${coll[@]}"
do
    echo "Exporting ${i}"
    $(mongoexport --username "$USERNAME" --password "$PASS" --db 500 --collection "$i" --limit "$LIMIT" --out "$i.json")
done
zip -r export.zip *.json
rm -rf *.json