MongoDB copy all indexes for collection

mongodb_copy_all_indexes_for_collection.js

db.getCollectionInfos().forEach(function(coll) {
if (coll.type === "collection" ) {
    db[coll.name].getIndexes().forEach(function(index) {
    if ("id" !== index.name) {
        //print( JSON.stringify( index ))
        var indexKey = index.key	// save the key, and transform index into the "options"
        delete index.v
        delete index.key
        index.background = true	// optional: force background to be true
        print("db." + coll.name + ".createIndex(" + JSON.stringify(indexKey) + ", " + JSON.stringify(index) + ")");
    }
    });
}
});