Pre-built binary
Today's Linux distributions have lots of pre-build software, which can be installed with ease. A single command can be used to install FreeRADIUS from a software repository. This will resolve dependencies and install all the required packages in order to present a working system.
Note
Software repositories are used by the package management system that runs on Linux. If you are new to package management systems, refer to this URL for further reading: http://en.wikipedia.org/wiki/Package_management_system
The default installation of the three distributions will include repositories that contain the FreeRADIUS packages. If this is not the situation, consult the package management system's documentation in order to determine how to include the repositories that contain the FreeRADIUS packages.