Add script to check a branch for Signed-off-by lines in commits

scripts/signed-off-by-in-branch.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+# Checks whether all commit between $1 and $2 have a signed-off-by line
+
+RED='\e[0;31m' # Red
+NORMAL='\e[0m' # Text Reset
+
+faulty=$(git rev-list --grep "Signed-off-by" --invert-grep $1..$2 | wc -l)
+
+if [[ $faulty -eq 0 ]]
+then
+    echo >&2 "All good"
+else
+    echo -en >&2 "${RED}Got $faulty non Signed-off-by commits${NORMAL}"
+    echo -e  >&2 "${RED}between $1 and $2${NORMAL}"
+fi
+