diff --git a/STOP b/STOP
new file mode 100644
index 0000000..e69de29
diff --git a/monshell3.sh b/monshell3.sh
new file mode 100755
index 0000000..a841672
--- /dev/null
+++ b/monshell3.sh
@@ -0,0 +1,9 @@
+#!/bin/bash
+
+nombre=100
+
+until [[ $nombre -eq 0 ]]
+do
+	echo $nombre
+	nombre=$((nombre -1))
+done
diff --git a/until2.sh b/until2.sh
new file mode 100755
index 0000000..50d785a
--- /dev/null
+++ b/until2.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+
+var=1
+
+until [[  var -ne 1 ]] 
+do
+	echo "Texte"
+	sleep 2
+	if [ -e STOP ]
+	then 
+		var=0
+	fi 
+done
\ No newline at end of file
diff --git a/while.sh b/while.sh
new file mode 100644
index 0000000..2c8e6fd
--- /dev/null
+++ b/while.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+
+var=1
+
+while [[  var -eq 1 ]] 
+do
+	echo "Texte"
+	sleep 2
+	if [ ! -e GO ]
+	then 
+		var=0
+	fi 
+done
\ No newline at end of file