Show the usage only one time in ybcon.sh, in all possible cases.

scripts/ybcon.sh

@@ -17,7 +17,11 @@ usage() {
   fi
 }
 
-pUsed=false
+usageExit() {
+  usage false
+  exit 0
+}
+
 args="";
 run=false;
 skipArgsIteration=false;
@@ -48,21 +52,18 @@ if [ "$#" != 0 ]; then
     do
       case "$it" in
         -h | --help | --version )
-          usage false
-          exit 0 ;;
+          usageExit ;;
         -p | --printresult )
-          if [ $pUsed = false ]; then
-            pUsed=true
+          if test "${args#*$it}" = "$args"; then
             newArgs "$it"
           else
-            usage false
-            exit 0
+            usageExit
           fi ;;
         *.ybcon )
           newArgs "$it"
           run=true ;;
         * )
-          usage false ;;
+          usageExit ;;
       esac
     done
   fi