diff --git a/devtools/find-changelog-duplicates.sh b/devtools/find-changelog-duplicates.sh
new file mode 100755
index 00000000..d1c4fc98
--- /dev/null
+++ b/devtools/find-changelog-duplicates.sh
@@ -0,0 +1,42 @@
+#!/bin/bash
+
+# Usage function to display help
+function usage() {
+  echo "Usage: $0 <file1> <file2>"
+  echo "Where:"
+  echo "  <file1> is the file to find duplicates within"
+  echo "  <file2> is the file to check these duplicates against"
+  echo
+  echo "This script finds duplicate lines in <file1> and prints out any"
+  echo "of these duplicates that exist in <file2>."
+  exit 1
+}
+
+# Check for help flag
+if [[ "$1" == "-h" || "$1" == "--help" ]]; then
+  usage
+fi
+
+# Check the number of arguments provided
+if [ "$#" -ne 2 ]; then
+  echo "Error: Two arguments are required."
+  usage
+fi
+
+# Assign arguments to variables
+file1=$1
+file2=$2
+
+# Check if files exist
+if [ ! -f "$file1" ]; then
+  echo "Error: File '$file1' does not exist."
+  exit 1
+fi
+
+if [ ! -f "$file2" ]; then
+  echo "Error: File '$file2' does not exist."
+  exit 1
+fi
+
+# Find duplicates and check against the second file
+sort "$file1" | uniq -d | grep -Fxf - "$file2"