diff --git a/script.sh b/script.sh
new file mode 100644
index 0000000..bcc2114
--- /dev/null
+++ b/script.sh
@@ -0,0 +1,18 @@
+#: /bin/bash
+#
+if [ $# -ne 2 ] ; then
+   echo "gimme a min and max"
+   exit 1
+fi
+
+min=$1
+max=$2
+i=0
+
+v=$RANDOM
+while [ $v -gt $max -o $v -lt $min ] ; do
+   v=$RANDOM
+   let i++
+done
+
+echo "$v obtenu en $i itération(s)"