diff --git a/mac2dos b/mac2dos
new file mode 100755
index 0000000..1e3e3ae
--- /dev/null
+++ b/mac2dos
@@ -0,0 +1,2 @@
+#!/usr/bin/env sh
+perl -pi -e 's/\r\n|\n|\r/\r\n/g' $1