mongoexport without _id field - Stack Overflow https://stackoverflow.com/questions/12976145/mongoexport-without-id-field/49895549?noredirect=1#comment118430161_49895549

mongoexport-without _id-field.md

db.export_without__id.insert({a:1})
db.export_without__id.insert({a:2})
db.export_without__id.insert({a:3, something_id: 'name'})

db.export_without__id.find().pretty()
{
  "_id": ObjectId("606ee1c03557e533795e426f"),
  "a": 1
}
{
  "_id": ObjectId("606ee1c23557e533795e4270"),
  "a": 2
}
{
  "_id": ObjectId("606ee1d93557e533795e4271"),
  "a": 3,
  "something_id": "name"
}

mongoexport --db test --collection export_without__id | sed '/"_id":/s/"_id":[^,]*,//'

2021-04-08T12:02:25.377+0100	connected to: mongodb://localhost/
2021-04-08T12:02:25.379+0100	exported 3 records
{"a":1.0}
{"a":2.0}
{"a":3.0,"something_id":"name"}

Still there ^