Finding out your Solr version

I can never remember how to do this without the GUI so here is the quick command to detect the Solr version you're currently running:

wget -q -O- localhost:8080/solr/admin/registry.jsp | grep -E "spec-version|impl-version"

A helpful StackOverflow link:https://stackoverflow.com/questions/2395089/how-do-i-find-out-version-of-currently-running-solr