diff --git a/tools/test/bin/onos-check-bits b/tools/test/bin/onos-check-bits
new file mode 100755
index 0000000..0cf5fe5
--- /dev/null
+++ b/tools/test/bin/onos-check-bits
@@ -0,0 +1,9 @@
+#!/bin/bash
+# -----------------------------------------------------------------------------
+# Checks if ONOS bits are available in preparation for install.
+# -----------------------------------------------------------------------------
+
+[ ! -d "$ONOS_ROOT" ] && echo "ONOS_ROOT is not defined" >&2 && exit 1
+. $ONOS_ROOT/tools/build/envDefaults
+
+test -f $ONOS_TAR