Mongo exports all collections of a database into JSON

mongoexport.sh

#!/bin/bash

HOST="127.0.0.1"
PORT="27017"
DB_NAME="dev"

# get a list of all collections in the database
collections=$(mongosh --host $HOST:$PORT --eval "db.getCollectionNames().join('\n')" --quiet $DB_NAME)

echo $collection
# loop through each collection and export it to a JSON file
while read -r collection; do
    echo "Exporting $collection..."
    # replace quotes and commas in the collection name
    filename="${collection//\'/}.json"
    filename="${filename//,/}"
    # export the collection to JSON
    mongoexport --host $HOST:$PORT --db $DB_NAME --collection "$collection" --out "./$filename"
done <<< "$collections"

echo "Done!"