Apache Solr QuickStart for Ubuntu
The Linked Tutorial Shows You Step-by-step How-to Install and Getting Started with the Latest Apache Solr on Ubuntu 14.04 Trusty Tahr LTS i386 / amd64 GNU / Linux.
Included on the Guide You find also the Links to Download the Apache Solr Search Server.
Apache Solr is an industrial-strength, high performance, thread-safe search server based on Apache Lucene.
Installing Apache Solr on Linux
Apache Solr Installation on Ubuntu