Install macports on mac.

macports.sh

# Move to tmp directory
cd $TMPDIR

# Download version 1.8.1 of MacPorts
curl -OL http://distfiles.macports.org/MacPorts/MacPorts-1.8.1.tar.gz

# Untar it
tar xzvf MacPorts-1.8.1.tar.gz

# Open it
cd MacPorts-1.8.1

# Configure, make, and install it
./configure && make && sudo make install

# Remove MacPorts' install files.
cd ../
rm -rf MacPorts-1.8.1*

# Update to latest versions
sudo port selfupdate
sudo port -d sync
sudo portindex
sudo port upgrade installed

# Install default files
sudo port install git-core +doc +gitweb +svn +bash_completion
sudo port install watch
sudo port install tree
sudo port install mtr
sudo port install imagemagick