created shell dir

shell/secret.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+echo -n Your age:
+read AGE
+
+#Problem with output as () cause to execute command in subshell.
+#[ $AGE -lt 20 ] && (echo You are not allowed to see secret; exit 1) || echo Welcome
+
+#command execute it same shell
+[ $AGE -lt 20 ] && { echo You are not allowed to see secret; exit 1;} || echo Welcome
+
+echo Secret is that there is no secret