# cf-agent -b config_nut /home/rodrigo/temp/config_nut.cf
/home/rodrigo/temp/config_nut.cf:20:62: error: Function does not return the required type
                        expression => not("nut_cliente_manter_ligado|nut_servidor"),
                                                             ^
2015-04-28T16:10:15-0300    error: There are syntax errors in policy files
2015-04-28T16:10:15-0300    error: Policy failed validation with command '"/var/cfengine/bin/cf-promises" "/home/rodrigo/temp/config_nut.cf" -b "config_nut"'