diff --git a/bash/docker-machine.sh b/bash/docker-machine.sh
new file mode 100644
index 0000000..27005bc
--- /dev/null
+++ b/bash/docker-machine.sh
@@ -0,0 +1,10 @@
+# A simple wrapper for docker-machine.
+
+function dcontrol() {
+    if [ $1 = "off" ]; then
+        eval $(docker-machine env -u)
+        return
+    fi
+
+    eval $(docker-machine env $1)
+}