Question: My input file looks something like this:

```
{
  "login": "dmaxfield",
  "id": 7449977,
  ...
}
{
  "login": "dmaxfield",
  "id": 7449977,
  ...
}

```

I can get all the login names with this : `cat members | jq '.[].login'`

but I have not been able to crack the syntax to get both the login and id?

Answer: 
You can use `jq '.[] | .login, .id'` to obtain each login followed by its id.
Just provide one more example here (jq-1.6):

Walk through an array and select a field of an object element and a field of object in that object

```
echo '[{"id":1, "private_info": {"name": "Ivy", "age": 18}}, {"id":2, "private_info": {"name": "Tommy", "aga": 18}}]' | jq ".[] | {id: .id, name: .private_info.name}" -

{
  "id": 1,
  "name": "Ivy"
}
{
  "id": 2,
  "name": "Tommy"
}

```

Without the example data:

```
jq ".[] | {id, name: .private_info.name}" -

```

`.[]`: walk through an array

`{id, name: .private_info.name}`: take .id and .private\_info.name and wrap it into an object with field name "id" and "name" respectively