How to delete SOLR indexed data by query with curl?
You have to add query tag.
<delete><query>(cartype:stationwagon)AND(color:blue)</query></delete>
In this way would be easier: curl "http://46.231.77.98:7979/solr/collection/update/?commit=true&stream.body=<delete><query>(cartype:stationwagon)AND(color:blue)</query></delete>"
It's a simple GET request and you have just to add the parameter stream.body=<delete><query>(cartype:stationwagon)AND(color:blue)</query></delete> to the query string.
Using JSON instead of XML:
curl -g "http://localhost:8983/solr/$core/update" \ -H 'Content-Type: application/json' \ -d '{"delete":{"query":"field:value"}}'