diff --git a/bin/concat b/bin/concat
new file mode 100755
index 0000000..32a1217
--- /dev/null
+++ b/bin/concat
@@ -0,0 +1,11 @@
+#!/usr/bin/env lua
+
+local first = true
+for line in io.lines() do
+	if first then
+		first = false
+	else
+		io.write(...)
+	end
+	io.write(line)
+end