Base module that is OS agnostic

base_init.pp

class base {

    case $::operatingsystem {
        'ubuntu', 'debian': {
            include base::debian
        }   

        'fedora', 'centos', 'redhat': {
            include base::el
        }   

        default: {
            notice("${::operatingsystem} is unsupported")
        }   

    }   

    tidy { '/tmp':
        age     => '1w',
        recurse => true
    }   

}