Drush is a widely used command line management tool for Drupal installations. It can quickly clear the cache, enable / disable modules. I recommend it to any developer who want to get his job done faster. One of it's advantage is the ability to automate. Like during automated tests or deployment scripts.
To install it on FreeBSD, follow these simple commands:
wget https://github.com/drush-ops/drush/archive/master.zip --no-check-certificate unzip master.zip -d /usr/local mv /usr/local/drush-master /usr/local/drush ln -s /usr/local/drush/drush /usr/local/bin/drush
The required libraries will be downloaded at first run, so don't forget to run drush as root after you downloaded it: