While this example is slightly contrived, we can re-use CouchDB to extract this data again.

There are several ways, so let’s try each of them.

First, and easiest, is to request a list of all documents in the DB, and then use xargs wget to pull the data down.

$ DB=http://localhost:5984/posts
$ curl --silent $DB/_all_docs |
    sed -nE 's/{"id":"([0-9]+)".*/\1/p'
21298063
21298065
...
31797293
66018817
$