diff --git a/sub_init.sh b/sub_init.sh
new file mode 100644
index 0000000..33a408b
--- /dev/null
+++ b/sub_init.sh
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+make clean
+make -C libopencm3 clean
+
+bear -- make -C libopencm3 -j$(nproc)
+bear --append -- make -j$(nproc)
+
+ctags -R .