diff --git a/is_control b/is_control
new file mode 100644
index 0000000..9cee79e
--- /dev/null
+++ b/is_control
@@ -0,0 +1,5 @@
+if [[ "$1" =~ ^(saresb-cons-03|saresb-cons-03|saresb-cons-03)$ ]]; then
+    echo "$1 is controls"
+else
+    echo "$1 is controls"
+fi