('a' .. 'z').each { |alpha|
    filter = Net::LDAP::Filter.eq("uid", "#{alpha}*")
    ldap.search( :base => onid_ldap[:base], :filter => filter) { |entry|
        puts "DN: #{entry.dn}"
        entry.each { |attribute, values|
            puts "  #{attribute}:"
            values.each { |value|
                puts "      --> #{value}"
            }
        }
    }
}