Backup mongodb indexes

gistfile1.txt

print(`// Backup indexes of : ${db.getName()} : database`);
print(`use ${db.getName()};`);

db.getCollectionNames().forEach(function (collection) {
    indexes = db.getCollection(collection).getIndexes().forEach(function (index) {
        if (index.name === '_id_') return; // skip defalut _id indexes
        const keys = tojsononeline(index.key);
        delete index.id; delete index.key; delete index.v; delete index.ns;
        print(`db.${collection}.createIndex(${keys}, ${tojsononeline(index)});`);
    });
});

mongo --quiet mongodb://localhost:27017/mydatabase indexes-backup.js