diff --git a/tools/whitespace.sh b/tools/whitespace.sh
new file mode 100755
index 0000000..5fb4a2f
--- /dev/null
+++ b/tools/whitespace.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+
+RESULT=0
+
+for i in "$@"; do
+  a="`tail -c 1 "$i"`"
+  if [ "$a" != "" ]; then
+    echo "$i does not have a trailing newline" 1>&2
+    RESULT=-1
+  fi
+done
+
+exit $RESULT