MongoDB

Shell

• Connect:

  mongo <db_name> -u <user> -p <pass>
  

Database

• List:

  # Quick
  show databases
  
  # Normal
  db.adminCommand({listDatabases: 1})
  

Collection

• List:

  # Quick
  show collections
  
  # Normal
  db.runCommand({listCollections: 1})
  

Document

• Simple query:

  db.<collection_name>.find().pretty()  # find() or findOne()
  db.<collection_name>.find({<query_field>: "<value>"})
  

• Complex query:

  db.<collection_name>.find(
    {"<query_field>.<child_query_field>": "<value>"},
    {<include_field>: 1, <exclude_field>: 0}
  ).pretty()