Downloading and Running Simian - Paul-Schliep/CraftBukkit GitHub Wiki
Installing Simian
Go to this site: http://www.harukizaemon.com/simian/get_it_now.html
Download this tarball file: simian-2.3.35.tar.gz
Create a folder in your home directory named "Simian"
Move simian-2.3.35.tar.gz into the "Simian" directory
Extract the files from simian-2.3.35.tar.gz into the "Simian" directory
Running Simian
In the terminal, go into the directory for the project you want to run through Simian
Run the command: java -jar ~/Simian/simian-2.3.35/bin/simian-2.3.35.jar [options] [files]
For example: java -jar ~/Simian/simian-2.3.35/bin/simian-2.3.35.jar "**/*.groovy" Will generate a Simian report for all the .groovy files in the project.
There are a few other examples on the page: http://www.harukizaemon.com/simian/installation.html