How do I find where ElasticSearch is installing my plugins?

Question

To find your elasticsearch home directory & install plugin(s) follow these steps below.

Locate your home directory ( Look for Settings -> Path -> Home for value )

$ curl "localhost:9200/_nodes/settings?pretty=true"

Goto Location (Example settings.path.home value: /usr/local/Cellar/elasticsearch/1.5.0)

$ cd /usr/local/Cellar/elasticsearch/1.5.0

Install Plugin (Example plugin: mobz/elasticsearch-head)

$ bin/plugin -install mobz/elasticsearch-head