diff --git a/ex01/hello_world.sh b/ex01/hello_world.sh
new file mode 100644
index 0000000..ad52e87
--- /dev/null
+++ b/ex01/hello_world.sh
@@ -0,0 +1,6 @@
+#!/usr/bin/env bats
+if [ -n "$1" ]; then
+echo "Hello, $1!"
+else 
+echo "Hello, World!"
+fi
diff --git a/ex01/hello_world_test.sh b/ex01/hello_world_test.sh
index bc6946b..7355ca2 100644
--- a/ex01/hello_world_test.sh
+++ b/ex01/hello_world_test.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bats
+#!/usr/local/bin/bats
 
 @test "When given no name, it should greet the world!" {
   run bash hello_world.sh
diff --git a/ex02/ex02.sh b/ex02/ex02.sh
new file mode 100644
index 0000000..0e2c15f
--- /dev/null
+++ b/ex02/ex02.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+input=$( echo $1 | tr "; " "\n" )
+
+for i in $input
+do
+ls -R | grep -Fi $i || echo "the searched PATH is unexisting"
+done