Some important mongo commands

mongo_cmds

* docker run --name mongo-container -d -p 27017:27017 -v data:/data/db mongo

* mongo remote_ip [connect to a remote monogodb using mongoshell]

* mongo --host mongodb0.example.com --port 27017 

* sql:table::nosql:collection

* sql:datarow::nosql:document

* show dbs [show all dbs]

* db [db currently connected to]

* show collections

* use db_name [create new_db]

* db.dropDatabase() [drop database]

* db.creatCollection("collection_name")

* db.stats() [db details]

* db.collectionName.drop() [delete collection from db]

* db.collectionName.insert() [creates collection if not exists]

* db.collectionName.find().pretty() [search collection]

* db.collectionName.updateOne(
    { "item" : "paper" }, // specifies the document to update
    {
      $set: {  "size.uom" : "cm",  "status" : "P" },
      $currentDate: { "lastModified": true }
    }
)

* db.collectionName.find({"released": {$lt:2010}}).pretty()

* db.movies.find({"released": {$gt:2010}}).pretty()

* db.movies.find({"released": 2008}).pretty()

* db.collectionName.find({}, {"_id": 0, "title": 1, "language": 1}).pretty()

* db.collectionName.count() [count # documents]

* db.collectionName.count(
... {"released": {$gt: 2010}}
... )

* db.collectionName.deleteMany(
... {"released": {$lt: 2010}}
... )

* db.collectionName.deleteMany() [delete all documents]