diff --git a/script4.sh b/script4.sh
new file mode 100755
index 0000000..061d702
--- /dev/null
+++ b/script4.sh
@@ -0,0 +1,24 @@
+#!/bin/bash
+
+#this script is about navigatting directory levels
+echo ""
+LEVEL=$1
+echo ""
+
+#initialize CDIR to the current directory
+CDIR="."
+
+#loop to move up the directory levels.
+for ((i=1;i<=LEVEL;i++)); do
+	CDIR="../$CDIR"
+done
+
+
+#change to the calculated directory.
+cd "$CDIR" || exit
+
+#print the current working directory.
+echo "You are in: $PWD"
+
+#start new Bash session
+exec /bin/bash