The wildcard query is used when a part of a term is known. It allows completion of truncated or partial terms. They are very famous because they are often used for commands on files within system shells (that is, ls *.jpg).
Using a wildcard query
Getting ready
You need an up-and-running Elasticsearch installation as we described in the Downloading and installing Elasticsearch recipe in Chapter 1, Getting Started.
To execute the commands, any HTTP client can be used, such as curl (https://curl.haxx.se/), postman (https://www.getpostman.com/), or similar. I suggest you use the Kibana console as it provides code completion and better character escaping for Elasticsearch.
To correctly execute the following commands...