diff --git a/scripts/prepare.sh b/scripts/prepare.sh
new file mode 100644
index 0000000..0c26ffe
--- /dev/null
+++ b/scripts/prepare.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+git reset hard
+git pull
+git submodule update --init --recursive
diff --git a/sh/custom/aliases.sh b/sh/custom/aliases.sh
old mode 100644
new mode 100755
diff --git a/sh/custom/os.sh b/sh/custom/os.sh
old mode 100644
new mode 100755
diff --git a/sh/custom/vars.sh b/sh/custom/vars.sh
old mode 100644
new mode 100755
diff --git a/sh/load.sh b/sh/load.sh
old mode 100644
new mode 100755