mongodb list all indexes for all databases

mongodb_list_indexes_all_db.js

// List all indexes in all databases

    db.getMongo().getDBNames().forEach(function(dbName) {
    if (dbName != "admin" && dbName != "local" && dbName != "config") {
        db.getSiblingDB(dbName).getCollectionNames().forEach(function(coll) {
            db.getSiblingDB(dbName)[coll].getIndexes().forEach(function(index) {
                if ("id" !== index.name) {
                    print("db.getSiblingDB('" + dbName + "')." + coll + ".ensureIndex(" + tojson(index.key) + ")");
                }
            });
        });
        }
    });