My own MongoDB query cheat sheet

mongodb-queries-cheat-sheet.javascript

// Connect *quietly* to a database with user/password authentication:
mongo $host/$database --quiet --username $user --password $password

// List databases:
show databases
// Change database:
use $database

// List collections for current database:
show collections

// Number of documents in a collection:
db.$collection.count()

// Return a raw document in a collection:
db.$collection.findOne()
// Return a formatted ("pretty") document from a collection
db.$collection.findOne().pretty()

// Display the last document per a given field, in a collection:
 db.$collection.find().sort({$field: -1}).limit(1)
// Filter output fields using a projection:
db.$collection.find({}, {$field: 1})
// Filter data by field value:
db.$collection.find({$field: $value})
// Combine filter on data and fields:
db.drvs.find( 
 // Only return documents having this field:
 { linkedIds: ["h015n001", "h015n003"] },
 // Only return two fields
 { _id: 1, name: 1 } )
// find "like"
db.monographies.find({ nom_complet: /dopliprane/ })