http://snowolf.iteye.com/blog/774312
homebrew主页对brew
https://github.com/mxcl/homebrew/wiki
Pre. install brew
curl -LsSf http://github.com/mxcl/homebrew/tarball/master | sudo tar xvz -C/usr/local --strip 1
1. install software
brew install pip
brew install tomcat
2. uninstall software
brew uninstall urar
3. search software
brew search /apache*/