diff --git a/.mystools/hooks/commit-msg.sh b/.mystools/hooks/commit-msg.sh
new file mode 100644
index 0000000..4b5f780
--- /dev/null
+++ b/.mystools/hooks/commit-msg.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+too_long_lines=$(awk 'length>72' $1)
+if [[ ! -z $too_long_lines ]]; then
+	echo "Too long commit message lines:" $too_long_lines
+	has_failed=1
+fi
+
+leading_lowercases=$(awk 'NR==1' $1 | awk '/^[[:lower:][:punct:]]/')
+if [[ ! -z $leading_lowercases ]]; then
+	echo "Leading lowercase in subject:" $leading_lowercases
+	has_failed=1
+fi
+
+trailing_periods=$(awk 'NR==1' $1 | awk '/(\.)$/')
+if [[ ! -z $trailing_periods ]]; then
+	echo "Trailing periods in subject:" $trailing_periods
+	has_failed=1
+fi
+
+if [[ ! -z $has_failed ]]; then
+	echo "Please recommit with a new commit message."
+	exit 1
+fi