Mongoexport all collections to json (updated)

export.sh

#!/bin/bash

DB=$1
COLLECTIONS=$(mongo localhost:27017/$DB --quiet --eval "db.getCollectionNames()" | grep \" | tr -d '\[\]\"[:space:]' | tr ',' ' ')

for collection in $COLLECTIONS; do
    echo "Exporting $DB/$collection ..."
    mongoexport --db=$DB -c=$collection -o=$collection.json
done

original script here