To install homebrew, you'll need to open terminal and run below command:
ruby -e "$(curl -fsSL https://raw.github.com/mxcl/homebrew/go/install)"
Once homebrew is installed the following commands can be executed in your terminal window
macbook:~ fd$ brew update ~$ brew tap homebrew/dupes ~$ brew install ant
to check that it is installed properly
~$ ant -version Apache Ant(TM) version 1.9.2 compiled on July 8 2013
Reference: http://blog.xk72.com/post/53124504531/homebrew-dupes-installing-ant-on-mac-os-x
