serv list: improve speed with run sudo once

bin/serv-list

@@ -20,6 +20,7 @@
 # List running services
 serv_list()
 {
+	info "Running services:"
 	case $SERVICETYPE in
 #		service-chkconfig)
 #			;;
@@ -33,9 +34,11 @@ serv_list()
 			sudocmd systemctl list-units $@
 			;;
 		*)
+			# hack to improve list speed
+			[ "$UID" = 0 ] || { sudocmd $PROGDIR/serv --quiet list ; return ; }
 			load_helper serv-list_all
 			load_helper serv-status
-			for i in $(serv_list_all) ; do
+			for i in $(quiet=1 serv_list_all) ; do
 				is_service_running $i >/dev/null && echo $i
 			done
 			;;