diff --git a/ex01/hello_world.sh b/ex01/hello_world.sh
new file mode 100755
index 0000000..dadf132
--- /dev/null
+++ b/ex01/hello_world.sh
@@ -0,0 +1,8 @@
+#! /usr/bin/bash
+
+if [ -z "$1" ]; 
+then
+    echo "Hello, World!"
+else
+    echo "Hello, $1!"
+fi