A list of indices in MongoDB?

And if you want to get list of all indexes in your database:

use "yourdbname"

db.system.indexes.find()

From the shell:

db.test.getIndexes()

For shell help you should try:

help;
db.help();
db.test.help();

If you want to list all indexes across collections:

db.getCollectionNames().forEach(function(collection) {
   indexes = db.getCollection(collection).getIndexes();
   print("Indexes for " + collection + ":");
   printjson(indexes);
});