diff --git a/sh/cryptsetup.sh b/sh/cryptsetup.sh
new file mode 100644
index 0000000..900083d
--- /dev/null
+++ b/sh/cryptsetup.sh
@@ -0,0 +1,6 @@
+_rwx_cmd_cs() { rwx_crypt_setup "${@}"; }
+
+rwx_crypt_setup() {
+	local action="${1}"
+	echo "cs: ${action}"
+}
diff --git a/sh/main.sh b/sh/main.sh
index ae389aa..d573b21 100755
--- a/sh/main.sh
+++ b/sh/main.sh
@@ -7,7 +7,7 @@
 RWX_MAIN_NAME="main.sh"
 RWX_SELF_NAME="rwx"
 
-RWX_PREFIX_COMMAND="${RWX_SELF_NAME}_cmd_"
+RWX_PREFIX_COMMAND="_${RWX_SELF_NAME}_cmd_"
 
 # ╭───────────╮
 # │ variables │