improved usage info

1 files changed, 4 insertions, 1 deletions

diff --git a/mltk b/mltk
index 0e244752..2329e707 100755
--- a/mltk
+++ b/mltk
@@ -100,10 +100,13 @@ read_params() {
 				shift
 				;;
 	                *)
-        	                break
+				break
                 	        ;;
 	        esac
 	done
+
+	# exit if no command
+	[ "x$BUILD" = "x" -a "x$CLEAN" = "x" ] && print_usage && exit 1
 	
 	TOOLS="$@"	
 }