http://sphinxsearch.com/docs/current/installing-debian.html
Dependencies:
$ sudo apt-get install mysql-client unixodbc libpq5
Command above seems to have worked just fine
install Sphinx
sudo dpkg -i sphinxsearch_2.2.11-dev-0ubuntu12~trusty_amd64.deb
Command above did not work, but the command:
sudo apt-get install sphinxsearch
worked - from https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-sphinx-on-ubuntu-16-04
Thats the only command I have used on this webpage ... there is also a tutorial for setting up search