mongod --dbpath=data - set the database and run
mongo - mongosh

db
use nucampsite
db
db.help()


Next, create a collection named campsites, and insert a new campsite document in the collection: 
db.campsites.insert({ name: "React Lake Campground", description: "Test" });

Then to print out the campsites in the collection, type: 
db.campsites.find().pretty();

Note the "_id" that was automatically assigned to the campsite. 
Next, we will learn the information encoded into an instance of ObjectId by typing the following at the prompt: 
const id = new ObjectId();
id.getTimestamp();


To exit the REPL shell, type exit at the prompt:
exit