brew
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
brew search projectName
brew install projectName
Wget
http://www.gnu.org/software/wget/ download
tar zxvf wget-1.9.1.tar.gz
cd wget-1.9.1
./configure
make
sudo make install
wget www.google.com 检测