The easiest way to install various Unix tools and open source software onto Mac OS X is via a package manager, unfortunately OS X doesn’t come with one, but fortunately there are some good folks that care. They come in the form of Homebrew.
Download and install it, you also need to open Xcode agree to the license and it will install its components.
Get Command Line Tools
To download install Homebrew run the install script on the command line as below and let the script do its thing:
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
After installing and as suggested in the command line, to check for any issues with the install run:
To search for an application:
brew install <application-name>
To list all apps installed by Homebrew
To remove an installed application
brew remove <application-name>
To update Homebrew
To see what else you can do
Where does Homebrew install stuff …. in the Cellar
Where the brew lives.
Updating from previous OSX Version
If you are updating from a previous OSX version you may run into file permission issues with El Capitan’s new SIP process .
To get around this you can change ownership on the Homebrew directory
sudo chown -R $(whoami):admin /usr/local