Hur kan jag lista alla samlingar i MongoDB-skalet?

Du kan göra...

JavaScript (skal):

db.getCollectionNames()

Node.js:

db.listCollections()

Icke-JavaScript (endast skal):

show collections

Anledningen till att jag kallar det icke-JavaScript är att:

$ mongo prodmongo/app --eval "show collections"
MongoDB shell version: 3.2.10
connecting to: prodmongo/app
2016-10-26T19:34:34.886-0400 E QUERY    [thread1] SyntaxError: missing ; before statement @(shell eval):1:5

$ mongo prodmongo/app --eval "db.getCollectionNames()"
MongoDB shell version: 3.2.10
connecting to: prodmongo/app
[
    "Profiles",
    "Unit_Info"
]

Om du verkligen vill ha den söta, söta show collections utdata kan du:

$ mongo prodmongo/app --eval "db.getCollectionNames().join('\n')"
MongoDB shell version: 3.2.10
connecting to: prodmongo/app
Profiles
Unit_Info