#!/bin/bash

file1="$1"
file2="$2"
file1time=$(stat -c '%Y' "$file1")
file2time=$(stat -c '%Y' "$file2")

if [ "$file1time" = "$file2time" ]
then
    exit 0
else
    (
        echo "$0: File mtimes are not equal"
        echo "\$file1time: $file1time"
        echo "\$file2time: $file2time"
    ) 1>&2
    exit 1
fi